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A D V A N T A G EE X C E L L E N C E I N E N G I N E E R I N G S I M U L A T I O NV O L U M E V I S S U E 1 2 0 1 1
TM
SustainableDesign
REDUCE
PROTOTYPES
PAGE 12
INNOVATE
QUICKLY
PAGE 6
SAVE
ENERGY
PAGE 17
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To learn more about ANSYS acceleration on Tesla GPUs, visit www.nvidia.com/tesla.
©2011 NVIDIA Corporation. NVIDIA, the NVIDIA logo, and Tesla are trademarks or registered trademarks of NVIDIA Corporation in the United States andother countries. Other company and product names may be trademarks of the respective companies with which they are associated. All rights reserved.
2X THE DESIGN CANDIDATES.NO TRADE OFFS.ANSYS MECHANICALWITH NVIDIA® TESLA™ GPUs
Accelerate your design with ANSYS Mechanical 13.0 and NVIDIA® Tesla™ GPUs (graphics
processing units). The GPU-accelerated ANSYS structural mechanics solution enables you
to double your simulation speed, while reducing prototyping time and shortening design
cycles—doubling your design candidates within the same design cycle with no trade offs.
This acceleration is possible when you run ANSYS Mechanical on a workstation equipped
with a Tesla GPU featuring many “must have” capabilities for technical computing.
These Tesla GPU-powered workstations deliver performance increases that accelerate the
performance of computing with CPUs alone.
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TABLE OF CONTENTS
1
Table of ContentsSuStAINAble deSIgN4 BEST PRACTICES
Green Design without Compromise Companies can gain a sustainable competitive advantage and be
environmental stewards — through robust design and optimization.
6 TRANSPORTATION
Cleaner, Greener Engine DesignCummins uses simulation to reduce weight, improve fuel
economy and reduce emissions of engines.
9 CONSTRUCTION
Brussels’tainable Simulation helps to determine potential environmental impact
in preparation for a massive renovation in Brussels.
12 ENERGY
Catch the Next Wave Hydrodynamic simulation helps to deliver two- to three-times wave
power efficiency improvement.
15 ENERGY
Reacting to Emissions Fluids simulation helps to speed up research into chemical-looping
combustion capable of reducing fossil fuel emissions.
17 CONSTRUCTION
Meeting Green Building Design Goals withEngineering SimulationSimulation is driving innovation in HVAC design for an assembly hall in Saudi Arabia.
19 OFFSHORE
Don’t Rock the Float! Fluid–structure interaction allows designers to assess impact of waves
on freshwater and offshore systems.
22 ENERGY: WIND
Energizing the Wind Industry Increased complexities require a system-level approach
in designing and evaluating wind turbines.
24 ENERGY: WIND
More Power to You Simulation helps Indar to design one of the world’s highest-efficiency
permanent magnet wind turbine generators.
6
9
12
17
24
4
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27 ENERGY: WIND
Where the Wind Blows
Engineering simulation plays a role in getting the most powerfrom wind farms by predicting the best available locations.
30 ENERGY: WIND
Second Wind Advanced turbulence models lead to optimized wind turbine spacing.
SImulAtIoN@Work
32 AEROSPACE
Fast Lane to Sky HighFluid flow simulation software co-pilots design of
production prototype roadable aircraft.
35 ELECTRONICS
Successful LaunchCircuit and field tools combine to optimize satellite multiplexer design,
reducing time from 10 weeks to two days.
38 SCIENTIFIC EQUIPMENT
Glass Jaw Simulation helps to solve collimator jaw design problem in
the Large Hadron Collider.
depArtmeNtS41 ANALYSIS TOOLS
Designing Batteries for Electric Vehicles Numerical simulation can be used to accelerate battery development
and address safety concerns.
44 ACADEMIC
Microbubbles Keep Green Energy Blooming Algae-derived biofuel production gets a strong pulse from flow simulation.
46 ACADEMIC
Reforming a Fuel Cell Modeling ProcessCoupling flow simulation with complex chemistry tools brings a united
front to analyzing leading-edge energy systems.
48 TIPS AND TRICKS
Accelerating CFD Solutions Several recent enhancements in ANSYS FLUENT solver
capabilities accelerate convergence and reduce solution time.
www.ansys.c ANSYS Avana • © 2011 ANSYS, Inc.
TABLE OF CONTENTS
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BEST PRACTICES
ANSYS Avana • © 2011 ANSYS, Inc.4
Green Designwithout CompromiseCanis can ain a ssaina ciiv avana an nvinna swas — hh s sin an iizain.
By Thierry Marchal, Industry Director, ANSYS, Inc.
The Need for Sustainability
thh ch f h w, xc ha if
wi c , asi an cfa f
sccin nains. ov h as cny, ivis
nc ii h wahy hav c cnac;
in, any a nw cnsi a ncssiy. ownin a
ca, fyin an h w, accssin a c,
cnncin h inn f anywh, an sin a c
hn a in aciviis, vn in in cnis.
Hwv, h w can’ ssain sch xnnia
wh fv. th an has civ a wa- ca
a assin vcnsin. many scinisssa haicay ha w a in an, an h
han scis, in an.
th ain is aiy ainin h w’s fssi
ny scs; a h sa i, issins f hs
fs a naivy iacin h nvinn an is
naa vin. H ans f was aia a
in s wih h h ha h ah can c wih i.
ms a awa ha h cann ssain
hs acics fv. Whi a win n f
a in h w’s ain shin
a i, any inivias a nwiin sacific hi
cfa ifsy.
Reluctance to Sacrifice Current Standards
Wih a , cas c nvinnay
finy, if y svy h an, w y fin
wiin ay achiv his jciv? ms
w can acc sinifican cins in
fanc, s accain. gn iin is a
cn asiain, wi h ccans a in
a i ss wa in win, an a i wa in
s? rnwa ny is a “s ” ny if h
sin w is ss xnsiv an a as as
sa. An aia a: Can w ach i wih
sna cis?Cn sns icas ha w can’ sch
xcains sin aiina aachs an ch-
nis. ra ahhs ay ncssay
achiv ssainaiiy as in hs aas:
• Better energy management: Fssi fs ain
an ian ny sc, hy c
s ffcivy an scivy. Scs
f nwa nis sh xi.
tansain, cnscin an anfacin
s c ny fficin.
• Pollution reduction: twny-fis cny ifsys
s in h as f h qaniis f vaisaias in h nvinn, ain asin
an cycin f hs ssancs iffic wih a
ic iac n h an.
• Product lifecycle: Af a ifi f s, cs
qicy c was aia. Shn c
if incass h an f was. pcssin
cyc aias in nw cs in a cs-
ffciv ann can nfi ay f n
siain chny.
Virtual Experimentation, Virtual Testing, Virtual Prototyping
If ssaina cs an csss ay a
y “nic hav,” i is iy n sin wi c
anay in h f, isa an fc y a
sss v sins. pins an
ain canis a aay ain f his vin
y sinin ssaina sins. b h chan is
Engineering for sustainability includes designing more efficient waysto treat waste, such as studying settling in a wastewater treatment tank.Courtesy MMI Engineeering.
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sana chny. dsinin sa, n cs
a hih v f c iniy qis invsiain a
win n f aas — sch as insin,aias an ain cniins — vi
sins wih nh f ns
cnsains. rs sin incs inificain f
infnia aas an vaain f sin snsiiviy
as n fin vaiains.
th cinain f aaic sis an snsiiviy
anaysis f a a n f aas sin avanc
s (s sin an iizain) ns h a
nw a f sin.
Engineering Simulation: A Profitable Green Technology
eninin siain has vn is cs-ffcivnss in vin innvaiv cs. this
sa chny can s
sin n cs
an csss. pinin c-
anis a aay cain a
can an fia
f y chanin hi sin
csss an wiy ain
siain ansf h
n chan in a aj
sinss niy. this iss
f ANSYS Advantage isas
hw canis a sin
chnsiv ina i-
hysics f ANSYS ainain
ca snsiiiy whi
incasin fi. n
www.ansys.c 5
BEST PRACTICES
5
anin. envinnay finy cs ay qi
aj innvains ha c iac h cs an s-
nss. Innvain say qis inns xinainan iizain. ra ahh sins n
sysaic sin ns ha nw sins hav
y hh h ni ifcyc. exinain
an sin csss a yicay i innsiv, csy
an iffic ana in a hihy ciiv w.
bs-in-cass canis a assin his iss y
swichin h via w.
Ns s an insy sis, s fn
in his iss f ANSYS Advantage, ss ha an
f ani xinain can n viay
f a sa cs. eninin as can vay ns
aas inify h s cinain f ssainasin, inia cs an axia fanc. lain
canis a sysaicay sin
hi via c ys aains
cniins ha w xinc
hh h ifcyc ns ha
c havi wi saisfy n ss.
Cninay incasin caina
w cin wih hih-fficincy
svs can cni h ff:
thy ih na h n
cxiy f via ss
vy 18 nhs wih iac n
cs i a.
Robust Design and Optimization
S s a i n a i i y as a n w
insin ha is iffic han wih
Engineering simulation can help organizations meet regulations and standards. This study was used to assess the impact of fume cupboarddischarges on surrounding buildings and the environment.Courtesy BDP Engineering.
Designing smart green products to a high levelof product integrity requires advanced tools thatinvestigate a growing number of parameters.
ANSYS Avana • V V, Iss 1, 2011
P 1 2 - F K a l o t t e [ N ]
P 6 - p a r_ R
k
P 1 0 - p a r _R d
10
9
8
7
6
0.35
0.4
0.45 0.850.75
0.650.55
B a c k g r o u n d p h o t o © i
S t o
c k p h o t o . c o m / o o y o o
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Cleaner, GreenerEngine DesignCins ss siain c wih,iv f cny an c issins f nins.
By Bob Tickel, Director of Structural and Dynamic Analysis, Cummins Inc., Columbus, U.S.A.
th has “nvinnay snsi” sn’ s
fi in a snnc wih h s 18-wh ac ai
an havy-y c. As a w-ain anfac f
ccia nins an a syss, Cins Inc. is
win chan ha cin n sin a a i,
vin nx-nain chnis ha a v-
inizin h innaina cin insy.
usin sfwa f ANSYS, Cins is vin
an sin aica ivns in nin sin,incin h s f anaiv aias an sa
nin fins ha c wih, iv f
cny an c issins — whi as sin
fanc. th w f h ca sach an
chny anizain fcss n vin nw,
nvinnay snsi chnis f h
cany’s c nin sinss.
Cins’ cn c vn ffs a a
a a f anin n f cny an issins —
an wih asn. gvnn nvinna
sanas w chanin vy ya. bcas
ccia cin is a w-ain sinss, vyivn ha Cins as in f cny as
is css’ sccsss. byn hs acica
cnsiains, Cins invss in nvinnay
snsi nin chnis cas i is h ih
hin . th cany wans h cin insy
viw as an nvinna swa an chain,
n n f h “a ys.”
Building the Truck of the Future
In cniin f is nvinna chny
ashi, Cins cny civ nay $54 iin
in fnin f h u.S. dan f eny (doe)
s w jcs ai a ivin f fficincy inh havy- an ih-y vhics.
A $39 iin wi fn Cins’ vn f
a nw “sc” — a hihy fficin an can is-
f Cass 8 (havy-y) c ha is xc s a
nw insy sana f n chny. Anh
$15 iin in fnin wi s h vn f
avanc-chny wains f ih-y vhics.
th sin ivns in nin sys fficincy
wi an sinificany w f an
cnsin y hs vhics as w as a sinifican
cin in nhs as issins.
thh ais f his w a iay, Cinsis sin sfwa f ANSYS sia nin
fanc an achiv h aiis as fin y
h doe: Iv Cass 8 vhic fih fficincy y
50 cn an achiv a 40 cn ivn in f
cny in ih-y vhics.
Cummins ISX15heavy-duty engine
Cummins ISF3.8 lightcommercial vehicle engine
www.ansys.c ANSYS Avana • © 2011 ANSYS, Inc.6
TRANSPORTATION
I m a
g e © i
S t o c k p h o t o . c o m / P e s k y M o n k e y
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t isa hw Cins vas ANSYS sfwan a aiy asis, cnsi his cn c incin:
h nx-nain ISX15 nin sin, v
scificay sinn nw issins sanas
f h u.S. envinna pcin Ancy (epA).
ths ains, which ca f na-z issin
vs f nin xi (Nox) an aica a (pm),
ac nw ans n c anfacs an
f anas.
Cins s ANSYS chny v
nhanc a n f fas in h ISX15 sin,
incin h nw Cins afan sys ha
incas a vinay is aica fi (dpF)
a a in h nw issins sanas.
th dpF vs is aica a s
f h xhas as f a is nin. Cins s
ANSYS sfwa sia yica ain as an
a icins a h nw dpF’s fanc an
iaiiy. eninin siain ic h a
as an a isiin insi his
cnn n a an f ain cniins. ths
ha anayss w ciica as hy va h a
as an a ains wihin h fi,
which iay in h ha fai an if fh cnn.
Vayin as wihin h dpF s in ha
ssss; if his cnn is n sin y, -
a vaiains can a cnn fai. Whi i
ih a nhs yas f fai cc in a-
w s, sfwa f ANSYS na Cins
qicy sia h ffcs f yas f fi sa an
a icins a hw h dpF w h v
i. this av h ninin a a hih f
cnfinc as hy sin h cnn an insa
i in cs vhics.
Ssqn fi an nch ss cnfi h si-ain icins, as i aca a ss. enins
can ay y n via sin an, sfwa f
ANSYS cnfi ha h Cins sin css was
vin in h ih icin — an ha h ss w
as a s xc.
Using Simulation to Rev Up Ongoing Engine Improvements
envinna sanas an cs ns a an
v-vvin a. S h Cins a ss
ninin siain iv nin fas an
s fanc. dsin chans ha c
issins an f cnsin fn s in hih
as an sss wihin h nin, which
qi Cins nins cninay s h iis f
cnvnina nin sins.
ms aias s in is nins xhii c
snh as a iss. th cinain f hih
ss/a an c snh acs sss
n cnns sch as h cyin ha, a icay
cx casin ha svs any fncins incin
ansfin nin i an can, inain ai an
xhasin as. th ha as hss h f injc
an vav ain cnns; i s cnain h cs-
in ass in h cyin fiin vn. t ass h
i fcs ha c in ay, Cins nins
s ihysics sfwa f ANSYS cin
ha an sca anayss in hi w n his
shisica nin cnn.
Siain s f ANSYS na h Cins
ninin a vaa h s f nw aiasacss h ni ica sfac f cyin has
an h nin cnns. ANSYS aws h
Cins a qicy an asiy answ qsins
By using software from ANSYS to predict maximum temperaturesand temperature distribution within its new diesel particulate filterunder diverse conditions, Cummins engineers can ensure that themanufactured component will have acceptable durability.
Cummins new aftertreatment systemaimed at meeting emissions standards
Selective catalyticreduction (SCR) catalyst
Diesel exhaust fluid (DEF)dosing valve
Cummins particulate filter
Decomposition filter
TRANSPORTATION
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sch as, “Wha hans if w anfac h cyin
ha f h is nw a ia? Wha a h
fanc ains?” wih h n acay achinan s nw cnns. Win in a sia
nvinn ivs hs nins h f wa
xisin nin sins — as w as aiv a s
“can-sh” sins ha ay hav h w v-
iniz nin fanc.
th a cny s sfwa f ANSYS
ic a fis in cyin has n
vais ain cniins. th ha ss w
s in hw his cnn w f in
h a w, as w as is hsh f h w-cyc
an hih-cyc fai.
Sinc cyin has a n-a-i, xnsivcnns, h Cins a s s ha a nw
sin is ih f vin fwa. usin siain
s f ANSYS, Cins nins can n ny
ca xacin s ss as s
incas civiy y incain caaiiis sch
as cnja ha ansf in in hi sins.
Wih anaysis- sin inc nw
aias an nw a cnfiains, Cins w
Cummins engineers can easily test the effectiveness of new materials,new designs and other innovations — and predict their long-term effecton overall engine performance. For example, Cummins engineers usedsoftware from ANSYS to simulate the impact of new materials on acylinder head design.
Wih s any nin cnns an fanc
ascs cnsi, h Cins ninin a
s f a wi an f sca siain
an anaysis. Accin b tic, ic f
sca an ynaic anaysis a Cins,
sfwa f ANSYS is h ny sin-vn
wih h chnica ah an h
his chan.
rcny, h Cins ca sach
an chny a an h swich f haiina infac f ANSYS sfwa h
ANSYS Wnch a f, a cisin as
iaiy n h c’s iv y i,
can an shin caaiiis. tic anicias
a 50 cn cin in hh i as
n h v ANSYS Wnch.
“th ANSYS Wnch nvinn vis
accss h s ihysics s w n
cnc any ys f siain an anaysis,” sai
tic. “Whh n is ha, sca,
ynaic saic ninin anaysis, ANSYS
Wnch vis h fxiiiy an vsaiiy
acca ns — as w as h i-
hysics caaiiis in h ss f vais
siains.”
tic n ha h fficincy an cs ffciv-
nss f ninin siain has s in a
c ca chan a Cins. “th as f
sin siain s f ANSYS has h
ansf anizain f a s-cnic c
an anaysis-cnic n,” sai tic.
“Whn invsiain a nw aia h sinnhancn, aiinay w w i nw as
an cnc hysica ss as a fis s — which
sn a i- an cs-innsiv aach,”
h sai. “tay, w fcs anin n fn
anaysis, ny vin a-iin an sin f
hs sin ivns ha w can vify fis sin
ANSYS s. this nw ca aach has n ny
sav s i an ny, aw s scivy
fcs anin n hs sin nhancns
ha a shwn h h as is f
vinizin f nin sins.”
Shifting Gears: ANSYS Creates a Cultural Change
hav y insa n vy xnsiv, i-cnsin
nanc ss vify h ninin a’s sins.
ANSYS is a y na Cins, cin h
cany’s va cs f vn y iniizin is
invsn in hysica nin sin. this aach
aws h sin f a nvinnay finy
nin wih cisin cs fanc. n
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Brussels’tainableSiain hs in nia nvinna iacin aain f a assiv nvain in bsss.
By Tin Meylemans, Architectural Engineer, and Jean-Pierre Demeure,
Head of Urban Planning, City of Brussels, Belgium
Arnaud Boland and Quentin Hamoir, Support Engineers, ANSYS, Inc.
In 1992 in h eah Si in ri Jani,200 cnis — incin bi — a Ana
21, an acin a f h 21s cny na
ay ssaina vn n h an. An
h a’s ain jcivs is snsi anan
f naa scs an hanis an vn.
As h fa caia f bi an an ainisaiv
cn f h ean unin, h Ciy f bsss has
n a a y xa. I is as a i cni
nain awanss f hw a ciis can naay
vv nvinnay finy an wh.
gi y Ana 21 an a in an
viaizain, h ciy n nvain f h Sa
Ainisaiv Ciy, CAe (Cié Ainisaiv 'ea),
an ian si in wnwn bsss. ofn cniz
as h fins achica achivn in bsss sinc
W Wa II, CAe is nvhss an an annin
fa, as i iina an ni isic an h
an faic wih is 140,000 sqa s f ffic
sac. As h bian fa vnn vv, h
ainisaiv ciy has n n s sinc h ay
2000s, avin his h si ncci. Is nvain
ha c a ciy iiy. tay h si is nin a
assiv nvain jc ha cins hsin,
ffics, shs, as an a sch.
bf any aj jc is cnsc, bian aw
qis an nvinna iac sy ha incs
cnic an scia facs, nvinna assssns,
iiy sis, hah infncs an nis v ffcs. Initial (top) and modified (bottom) geometries of Brussels’ CAE
The State Administrative City inBrussels was completed in 1983and is now largely unused.Photo courtesy Michael Uyttersprot.
www.ansys.c ANSYS Avana • V V, Iss 1, 2011 9
CONSTRUCTION
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CONSTRUCTION
th Ciy f bsss sc h ANSYS ffic in bi
invsia win fw ans f h nw si an
ca iffn ins f iin cains — via
ninin siain.
Win anaysis is sf in syin any aas
a a si’s s cf, in his cas incin
hih-is iins an n sacs. In s insancs,h iin acs as a scn an ivs cf, in
hs h win an c cas sinifican iscf
— an ih vn ans — sians an
ccans. Sva ian hnna can cc, sch
as channin an w ffcs, ha a ca win
accain an incas nc. ths hnna
can cni iscf f ca a n
v, acs an acnis. th win ffcs can
as aa vain an na nwan
ss ffcs n iins ha cas whisin
aia aa.
A y ica cf ci ia f h tNo (aninnn sach anizain in h Nhans
whs ai is ay scinific nw snhn
h innvaiv w f insy an vnn) qis
ha h win s in an aa 1.75 s av h
n sh n xc 5 s/scn f han
220 hs ya. In inifyin aas f iscf, h
sana s xss in s f aificain
fac (AF), h ai wn vciy wih an wih h
iin. A fac a han 1 ans h fw is
acca y h iins. Cnsiin bsss’
ica aa v h as 10 yas, an AF f ss
han 0.88 saisfis h s-siciv cf ciin.pjc nins invsia w cnfiains f
nvinna iac an wih a ssi n
iniiz h naiv iacs f win. th fis
cnfiain, ca iniia sa, cnain h ay f
h jc (h v nv sci y h Ciy f
bsss in which h iin s sia saisfy
ca annin ains). A scn cnfiain, ca
h ifi y, was si qanify h iac
f achica chans, sch as ws in i n
sis, achica ais, sch as cavins
nins ac n iffn vs/sis f h
sc. bcas ans f s f h aa w nc a h i f anaysis, his sy w shw
wh chans c hav an iac.
Initial design
Areas of potential discomfort in original (top)and modified (bottom) designs
Engineering simulation was performed to determine pedestrian comfort levels (with yellow and red indicating discomfort).
Recommended revision
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CONSTRUCTION
th ANSYS a in h aificain fac a
han hih f h cnfiains, isain win
ffcs sch as cn ffcs na a iins an
channin ffcs wn csy sac iins. F
h iniia sa, a a f h s-siciv vas (in
which AF is a han ciica va) va aas wh
ca win s was hih an w a sian iscf. th ifi cnfiain c
aas f iscf y axiay a fac f h.
th a s ANSYS ninin siain
in aifw wn h iins, an hs ss
w s na vciy vcs inify scific
ins f ins, sch as cicain zns in which
s c acca. th ais vi infain
ha h in ajsin h iin sin avi hs
ys f zns. pahins f win ajcy vi
incas nsanin f win havi na iins,
incin nc, an inifi aas wh nia
s c cc. Finay, cin ss cn-s n h iins inifi aas ha w qi
scia ca in h sin has avi h cn-
cns, incin whisin s insfficin
insain aa h faca.
this jc nsas h s f ninin
siain f sa anizain. Sch anaysis can
vi chnsiv as f aifw ans, ca
win vciis an ca nc innsiis — a
sf in annin an vn jcs. Siain-
ivn iin sin vis infain a hw
scs affc h nvinn, which can an
ian a f iscssins an cisins f ajc’s fis sas. n
Pathlines showing wind trajectory colored by velocity magnitude for original (left) and new (right) designs provided increased understanding of windbehavior near buildings to determine areas of concern.
Pressure contours for original and new designs identified areas thatrequired special care during design to avoid insulation whistling
problems or potential façade damage.
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If a h can’s ny c hanss, i w
c han 500 is h a ny cns-
in. th acica nia f wav ny wwi
is jc wn 2 iin an 4 iin iwahs ya. th W eny Cnci sias ha
a 10 cn f wwi ny an c
aisicay y havsin can ny.
b wav w is a ch ss a chny
han sa win w , sciay, fssi f.
A ns an f w is aha in iizin h
sin f wav w syss. rsachs s
iv fficincy an c css h in ha
hs syss can a a aj cniin in
a ny qins.
Cia pw tchnis (ColumbIA poWer),llC, is ain hanss his nia y vin
cciay via an scaa wav w nain
syss. In cnjncin wih on Sa univsiy, h
cany is win v an cciaiz
innvaiv wav ny havsin vics.
th a sva y avanas f wav w:
• Power density : Wav w is ch ns han
h nwa ny syss, nain wav
as c a ans f w f a
aivy sa fin.
• Predictability : th sy f ny f wav
w can accay fcas sva ays in
avanc, nain iiis a cis scin
ans.
• Constancy : uni sa w, which cs
ny ny whn h sn is shinin, can sws
a avaia 24 hs ay.
• Proximity to load centers: Wav ny wi n
qi ssania i f ansissin
caaciy, sinc 37 cn f h w’s ain
iv wihin 60 is f a shin, an 70 cn
si wihin 200 is.
Catch the Next WaveHyynaic siain hs iv w- h-iswav w fficincy ivn.
By Bradford S. Lamb, President, and Ken Rhinefrank, Vice President of Research and Development,
Columbia Power Technologies, LLC, Corvalis, U.S.A.
Preparing to test the wave power device
ENERGY
I m a g e © i
S t o c k p h o t o . c o m / M i c h a e l J a y
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th wav w insy, hwv, facs a aj
chan sinc c vs hav ch ss
xinc in h sin f wav w vics aiv
h nwa ny syss. Wav wcanis n aiy avanc fficincy an c
css f hi sins nsa viaiiy nia
invss an css. oh insis hav an
cas n v chny h in f
ccia viaiiy. b h wav w insy s
n hav ha in f i. t achiv is as, i ns
aiy iv sins whi cnsvin ii caia.
ColumbIA poWer is fcsin n vn f
ic-iv syss, which avi h s f naic
an hyaic cnvsin ss an hi asscia
sss. th cany ivs ha ic-iv syssa h f f wav w cas hy a
fficin an ia as w as asi ainain. th
n-n sin chan was iiz h sin
f h y axiiz h in f wav w
ansf h y. raiv ca wih is a
insinss as f h
fficincy f h vic in
cain h avaia ny
f h wav. A aiv ca
wih f 1 ans ha h y
has ca 100 cnf avaia wav ny.
As Columb IA poWer
s in h
ia sha f h y,
nins a f iv
iffn hyynaic si-
ain sfwa acas. th
cany sc ANSYS
AQWA sfwa cas f is
as f s, an ss shw
ha i vi a ach
wih hysica xins
han i ciiv sfwa.
ColumbIA poWer as
va ha ANSYS AQWA
COLUMBIA POWER’s wave power system: The wings and vertical spar react to the shape of the passing ocean swell. Each wing is coupled bya drive shaft to turn its own rotary generator.
Wave direction
2 3 4 5
COLUMBIA POWER engineers doubled efficiency of the buoy by using ANSYS AQWA to optimize its geometry.
ffs h fqncy an i ain sins.
Fqncy ain sins a fas, which as h
ia f qicy vaain a a n f shas,
whi i ain sins vi h hih v faccacy n fin h s shas in h a
sas f h sin css.
ColumbIA poWer nins v an iniia
cnc sin in SiWs®, i a y an
s i a 1/33 sca in h tsnai Wav basin a h
Hinsa Wav laay a on Sa univsiy. th
a s hih-sin caas ac ih-iin
is n h y, asin is in in h wavs.
enins x h cnc sin ANSYS AQWA
sfwa an f a i ain siain whi
sin a wav cia wih h sa ai anfqncy as ha as in h wav an. th was
a vy ach wn h asns an
icins f ANSYS AQWA. Sinc hn, nins
hav s ANSYS AQWA as hi iay sin
iiz h sha f h fi-infc asic (Frp) y.
ENERGY
1
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ENERGY
ColumbIA poWer has sinc vaa v 350
iffn is wih ANSYS AQWA in an ff
axiiz h aiv ca wih f h y. A h
sa i, h cany w csy wih eshis Inc.,
is sca an ha cs h Frp fas,
x h anfacaiiy f vais shas an
ns ha h fina sin can c a a w
cs. th cany as a h svivaiiy an
nvinna iac f s y sins.
ColumbIA poWer nins s a sinsia wav
sha an a si f wav fqncis anin f 2scns 20 scns f fqncy
ain siains. th sns
ai as caca y ANSYS
AQWA sfwa w s in a s-
cssin in win y ColumbIA
poWer nins ha cacas h
aiv q an s f h y as
w as h aiv ca wih.
onc hy f ha hy w cs
an ia sha f h y, ColumbIA
poWer nins v i ain
in, which as i ssi
vaa h nnina ffcs f h
wavs. th a vaa h shas
ha ha vn s in fqncy ain
in aains a vaiy f wav
cias, incin hs fn a svn
iffn casa cains an h
w. A h sa i, nins an
iizin h w aff sys ha
cnvs chanica ny in cica
ny. ANSYS AQWA ss f
fqncy ain s w s-
css in maa® Siin® inca h w
aff acin q an c w .
th ANSYS AQWA i ain s w c
a dll ha sia h ina an nnina w
aff ain. th dll f h w aff
was v in maa ra ti®. enins s h
f ANSYS AQWA iv a nica
v in Siin ha sias h w aff
sys an cn say. th cn say ns
h w aff h wav cia y chanin h
an f cn c y h na, which, in
n, chans h chanica a ac n h sys.
this as i ssi cnsi in a sin h
ffcs f iffn y shas, w aff sys
sins an cn sais; i as hs in
h w ha w na y ach aach in a
vaiy f iffn wav cias.
ColumbIA poWer cny an sin maxw
canic siain sfwa f ANSYS
iiz h sin f h na. enins vaah iffn canic siain
sfwa acas an cnc ha
maxw was h asis s an h
s sa. maxw is in s
anayz h canic fanc f
h na whi vayin h ai as
wn h an sa, iffn
an is, iffn an
ys, an iffn ys f s. th v-
a a is axiiz h na’s
ny whi iniizin is cs.
As a chny sa wih fa-f-
nii fnin, ColumbIA poWer
s caia fficin. by fcsin is
vn ffs n siain an
sin hysica sin jicisy as a
vificain , ColumbIA poWer is
vin fwa in h vn css
ch fas han w ssi sin
aiina vn hs. ANSYS
AQWA an maxw sia in sf wa
na h cany a is isas
in h c, wh hy a fa ss
xnsiv han in h can. ANSYS AQWA chny,
in aica, h han h fficincy f
ColumbIA poWer’s wav w sys. ColumbIA
poWer has nfi f h xcn chnica
s an civ ainin sssins vi y
ANSYS. As a s, h cany is n ac sn
y h fis can nsain f is chny in
p Sn. n
Maxwell software from ANSYSwas used to optimize the
generator design.
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ENERGY
asiy wn away y h win,
whas a i ain cainy
fas wih cnsia fc.
th sa hans in a fiiz
ac: th iny aics
cn a i n a
css an, hf, fa ch
aiy. If his csin is
n ccy, h si-
a in wi ic a
havin i a is, i
sh acay hav i a
hnshw. Cay, his wi
a ssania s.
In aiin, i is iv ha
aic scs infnc acins. Hih acin asa sv in ins wih hih v facins f
aics an acin as cncnains. A ns
aic cs sns a in in which s f sfac
aa is avaia f acin, an his sinificany
incass h acin a. Hwv, h cnsqnc is
ha h acin as insi h cs is s ch
fas, hy swin wn h acin. Csin is
acay an nwan hnnn in fiiz
acs cas i sws wn h acin a va
y cncnain a h sis in aas wih a w an
f acin as. Incc cs in, hf,
wi ic , nfnay vy wn,ac fanc.
th a a SINteF has acc h chan
cni fnana nw in h fi f si-
ain f sc sin n ac fanc.
rss hav shwn ha h which h css
hav sv (an hf h
caina cs f h siain)
ns ay n h aciviy f h
aic s in h ac. Whn a
hihy aciv aic is y, h
acin wn h f as an a
ns cs is as insanansan ccs as xcsivy n h
sfac f h cs. In his cas,
h s ian hnna
ccy a h aa f h
cs n which h acin can cc
an h ans f h acin as
scis his infac. Any sih
in h siin shanss f h
cs sfac wi a sinifican
in s.
Whn a ss aciv aic is s
in CFd siains, hwv, h
sin f h cs infac
cs ss ian. In his cas,
h acin a is sw nh aw
acin as na in h ai-
c css an ac hh h
ac ain. Sinc h ac-
in ccin n h cs s-
fac cnis ny a sa
an h a acin
a, h cc sciin f
his infac cs ss
ian.
p sin f aic
scs an wih achivin
hyynaic an acin
inic i innnc qi
nins ay aica
anin i siz ca
aic ia. t achiv
hyynaic i innnc
f ns s, h i siz can 25 aic ias vn hih, whi h fin scs f in iss
n i sizs f a axi f 15 aic ias,
vi hih- saia an a iscizain is
s. racin inic i innnc ws h
si way. I is vy snsiiv in ns s sinc h
v facin ain n a is s a. F vy
hih acin as, h i siz can 10 aic ia-
s w, whas f 50-is w acin a
h i siz can 25 aic ias. racin inic
i innnc in iss is sihy fivin, sinc
h css can i an nay cinci wih
hyynaic i innnc.Insiny, siain ss shw ha h s f
a hihy aciv aic wi n iv ac
fanc as ch as ih xc. In h hihy
aciv cas, n acin as scis is aw
na in h cs. A a cna f h
aics avaia f acin, h-
f, is in was insi h ns
css wh n acin as scis
is sn. Whn h aic wih a w
aciviy is s, f as is avaia
hh h ac, an a aics
a invv in h acin. t qanifyhis cnc, siains hav n
s shw ha a 50-is cas
in aic aciviy cass h
va acin a y a fac f
w h, nin n h
fiizain vciy.
Infain ain f his sy
is cny in s a SINteF
f fi siain as a sin
an iizain f ClC syss.
Fnana insihs ff y hs
s a ssania cniins
wa inifyin an iizin
ian sin aas
acca h vn f his
ian Co2 ca chny. n
The interaction between particle clustersand reacting gas using a particle withhigh reactivity (two images on the left)and low reactivity (two images on theright). In each pair of images, the oneon the left shows the particle volumefraction, and the one on the right showsthe reacting gas concentration.
A particle cluster (left) influences the concentration ofthe reacting gas (right).
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Meeting Green BuildingDesign Goals withEngineering Simulation Siain is ivin innvain in HVAC sin f an assy hain Sai Aaia.
By Sharbel Haber, Senior Mechanical Engineer, Balsam Nehme, Mechanical Engineering and Adnan Akhdar, Mechanical Engineer, Dar Al-Handasah, Beirut, Lebanon
Wih h v-incasin ans f ssaina
iins, nins a vin cx an
ivsifi sins c as, s fficincy an
iiz nwa scs. Fi ynaics siains
hav vn a wf an ffciv , viin
fxi sins in incasiny cx an anin
jcs. A ninin fi da A-Hanasah, hs
siains a xnsivy s as an iizain an
vaiain a an ay has in h sin css,sinc siain ss inain f innvaiv
sins an ny-savin ass a wa
casin h va faciiy’s ny css whi ain-
ainin ivin ccan cf.
da A-Hanasah (Shai an pans) has n a
inin fc in h annin, sin an inain
f vn jcs in h mi eas, Afica an Asia
sinc i was fn in 1956. tay, da A-Hanasah is
n f h as ninin an sin fis in h w.
A yica xa f iin f ny fficincy is h
cany’s cn sin f h 31,000-sqa- cn-
vnin cn a pincss Na bin Arahanunivsiy f Wn in riyah, Sai Aaia.
In h
assy
ha f h
cnvnin cn,
an nf ai
isiin (uFAd)
sys was c
wih a cnvnina ciin
ai sy. th assyha ha incs h sa
an sain aa cnsiss f f vs (asn, n,
zzanin an fis f) incnnc via n ai
cnin, wih a vs cci. da A-Hanasah
was cha wih cin h HVAC sys ny
cnsin whi nsin ainc cf: th a
aifw si y h hyi cin sys sh c
h cci zns ny h ins
wh ainnanc cawas a ca. th isiin
f ai sy s n iiz ns
ai ivy in h 24--hih assy ha whi
aviin isanc f h ha saificain fh ai, a y ny-savin as. Fi ynaics
Rendering of the convention center at Princess Noura Bint AbdulRahman University for Women in Riyadh. The center assembly hall was studiedto reduce energy costs while maintaining comfort.
Full-scale 3-D model of the
convention center assembly hall
CONSTRUCTION
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Don’t Rock the Float!Fi–sc inacin aws sins assssiac f wavs n fshwa an ffsh syss.
By Richard Grant, President, Grantec Engineering Consultants, Inc., Halifax, Canada
on a cn jc cissin y envinn
Canaa, ganc eninin Cnsans, Inc. was
as wih vin a wa qaiy niin fa
sin cay a sns f cain nvinna
aa. th fa ays a siia — an s
swha i — a caaaan, hh i is sin
ah han ivn y an nin sais. th a
f h anaysis was iniiz a an ns saiiy
f h fa as w as v scificains f h
in sys an sc. t his a, ganc
s ihysics siain sfwa f ANSYS
in h fi–sc inacin (FSI) y in
h fa an sns n a wi an f wa cnan wav cniins.
bas in h aii vinc f Nva Scia n h
as cas f Canaa, ganc an is nins hav an
xnsiv acn in h sca an fis anaysis
hin css in h fns, ffsh, ain,
anfacin, ny an aqac fis avanc
nw sins an syss. m cny, hwv,
ganc has fn fac h chan f hw cin
hs w anayss ha hav hisicay n f
saay. pvisy, whn h inacin wn fi
an sc was ciica, ganc’s nins n n h ss f h fi ynaics sfwa anay
in h sca anaysis sfwa an vic vsa. In
cnas, ANSYS ffs a sin inain sva f is
s wf an s fis an scs siain
s. Wih is i-fi sv, h ANSYS FSI sin
vi ganc’s a wih a iicina caaiiy f
i-ansin say-sa anaysis wih vin
fin y. usin ANSYS mihysics sfwa,
h ganc nins w hs a vaa h h
sca a f h anaysis an h fi fw sin
wih js a sin .
In h iina fa sin, h a h fa
an sns as a fw scin, which accn f h
fw cns an wav ain n h fa as w as
yancy fcs. thy hn vaa h vn f
w an sn wavs ha s f h sisanc f hh fi fw, js as wih h h f a shi. th
sfwa ica h vica havin an ana
ichin f h fa in sns iffn wav an
cn cniins. th iac fcs f h wavs
caca in h fi siain w aaicay
ass ac h sca accay
sia h ssss an fains n h h.
thh hy hav i ffc n fi fw, h ssss
a ian cas hy a i ssi iiz
h sin f h h a ch hih v han w
ssi wih h.Wih h FSI sin f ANSYS, ganc vaa
h fanc f a wi an f h fis an ass
isiins n iffn fw cniins, an i
Sensor float fluid–structure interaction (FSI) transient responseto current flow
Sensor float bow nosing down due to flow on sensor below float,deck awash
OFFSHORE
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Finite element mesh (top) and contours of stress (bottom) on a halfmodel of the sensor float. The FSI analysis was performed to look atthe effect of a fixed flexible boom on the float.
OFFSHORE
avana f aa cssin acca a
s fficiny han sin a sin-achin
nvinn. In h iniia sis f sins si, hsns was fix h sn f h fa an xn
vicay in h wa. th FSI ss f hs sins
shw h fc x y wa cns n h sns
cin wih h w wav n sh h w f
h fa nwa in fas cns. I was n acica
sv his y siy chanin h h sin,
s h a i a hin cnncin wn h sns
an h fa c h a ansi f h
sns h fa. th hin sns, hwv, ay
incas h cxiy f h siain anaysis.
ganc ass h nw chan f h hin-sns sin y in h fa wih h sns fix
in iffn hin siins sin h is i
n in h sca in f ANSYS mihysics
sfwa. uni h xnsiv aach s f h nn-
hin sins, his nw h vi a siifi
way f FSI anaysis. Wih h is i
n, h a ai wav an cn ain
h sca wih h caina a
invv in cin i a f fi ynaics anaysis. In
h f, ganc ans s a vin sh f
a c FSI anaysis incin f fi ynaics
siain ha wi vaa h in f h hin in
sns hyynaic fcs.
byn is sis f wa qaiy niin fas,
h cany has n xnsiv w wih ninin
siain h ca saf an scay
sn ffsh scs an syss. ganc’s
nins hav as s h ANSYS mhysics sin
assss aviy-as scs (gbSs) s c
ffsh i iin an cin afs f
ics. gbSs y n wih sc h h
sa, which iinas h n f iins in hasas. Cnc gbSs a yicay i wih h
aas ans s hy can fa h si an, nc
in siin, sn y fiin h ans wih wa. th
ganc a s FSI f ANSYS sia wav
ain a gbS incin h ffcs f assiv wavs
f ss — as nwn as n wa — cin v
is .
th cany ivs ha is invsn in ANSYS
mihysics sfwa has a a sinifican aiin
is anayica caaiiis. Cins s ganc
cas f is ac c in fin avanc
ninin sv vy cx s. ANSYS
chny has h anh in h ganc
x ha as i asi ass sin chans
ha js a fw yas a w hav n ch
iffic. n
Waves washing over top of gravity-based structure of offshore platform(waves traveling to the right)
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Invented the Supercomputer,
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benefits to design productivity and
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Mechanical™, HFSS™, and more.
Visit the Cray and ANSYSPartner Media Center at
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24/49
Generator andshaft design
Speed sensor design
Transformer design
Electric machineanalysis
Power electronics design
www.ansys.c ANSYS Avana • © 2011 ANSYS, Inc.22
ENERGY: WIND
Energizing the Wind IndustryIncas cxiis qi a sys-v aachin sinin an vaain win ins.
By Ahmad Haidari, Global Industry Director for Process, Energy and Power, ANSYS, Inc.
Win ny jcs an h — f sa insaains vy a win
fas — hav a cn a: c ni ny cs whi ivin iaiiy.
F a sinss sciv, chny cnis viaiiy y infncin
fficin win in sin, anfac, yn an ain. Whh
h aicain is an nsh, ffsh fa-sh insaain, avancns in
scinc an ninin wi cni h insy’s sccss, sciay hh
caaiiis a aynaic sin, aia scinc, sca sin,cnic chanica cn, si scin an fa ay.
Win ins an win ny jcs a cin incasiny
cx, s hy s a nay a vs niaina a fw yas a.
Insaains f vy a win ins in ffsh an fain cnfiains a a
aj chnica achivn. eny canis h sin, insa, an
fficiny an iay a sscs whs win a sans a v
50 s an sjc wav an win ain a iffn ans f aac.
Hisicay, win ny canis hav s ninin siain sfwa
as a in sin, s ny sia a scific sin asc anayz a
cnn. Sccssf aicain f ANSYS sins ans acss h win
ny insy, incin:
• Aerodynamic design: hs cfficin, a sca iniy, ia
as an fai, nis icain, win s fi–sc inacin, i
si, icin, nay ay ansiin, na-wa an fa-fi sis
• Structural design: w an sca iniy/safy, w cnvsin
fficincy, insaain cs an ainnanc, ffsh ans an insaain
• Component design: as, axs an ains, nas, nacs,
s, ivs, s, cnics cin
• Site selection and farm layout: axi jc nia, w
(h a an ava), win as, fai
• Turbine placement: vaia ain, hnss, fsy, i wa ffcs,
iins an sacs
• Electromechanical system
: cica achins, vaia-s cnsyss, ansfs, w cnics, w isiin, sns an
aca sin
• Blade manufacturing
tay’s incas cxiis qi a sys-v aach in sinin
win ins an vaain fanc as n a-w cniins.
Avancs in ninin siain sfwa incasiny a his ssi: F
xa, h ANSYS Wnch nvinn is sin wih caaiiis ha
na in ni win in syss. Is va is fh nhanc hh
avanc sv fncinaiy incin nc ansiin s, avanc
cnac s, ihysics caaiiis, csis s, hih-fanc
cin an h fxiiiy cnnc hi-ay sfwa f win ina anfacin a-asiciy cacains.
enins can f cchanica sys-v anaysis sin Si
sfwa, canic anaysis n cic achins an ivs wih maxw,
win w anaysis via ANSYS CFd, an sss an a anaysis sin ANSYS
mchanica. by vain hih-v inain an avanc caaiiis,
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ENERGY: WIND
nins v i a xnin hi nc-siifi
siains inc aiina ais in va win
in sin — nain sa fficincy ains,
ian in an insy in which a in fficincy/
fanc ain can ansa in ch a ciciy
cin, c wni an a jc fi-
aiiy. Sch ais can as iv iaiiy an na win ny jc ain.
Aay, h a any xciin xas f h
xanin s f ninin siain hh
h win ny sy chain. th saa win ny
aicains a sn in his iss f ANSYS
Adva ntage — an ach hihihs h ah f
ANSYS sins. Wih siain caai i is, h
jcs sn ay n hav n as sccssf.
Wih incas an f win ny, nins wi
fac aiina cxiis, sch as vn-a in
as ha wi insa fah ffsh an in hash
nvinns. Win fa si scin s cnin
c is an vc xiiy an nvinna
cncns. Nw wains, ih ws, i-accss
ins, fain afs an qi achins wi v. th insy wi innva h
chans f incas safy an iaiiy, iv
niin, c sys ainnanc an
ay cncns. ANSYS is in ac y viin
hih-fiiy ina, avanc caaiiis ha
sin-hysics ns as w as sys-v an i-
isciinay qins f h win ny insy. n
Offshore installationand certification
Tower design and fluidstructure interaction
Blade design
Rotor sizing
and acoustics
S o m e i m a g e s c o u r t e s y
C E N E R , I M P S A , R E p o w e r S y s t e m s A G , T r a n e I n c . ,
X a n t h u s E n e r g y L t d . a n d i S t o c k p h o t o . c o m / T o r e J o h a n n e s e n .
Software from ANSYS meets the challenges of individual applications as well as of complete systems in the wind energy industry.
Design of floatingoffshore wind turbine
Power distribution analysis Site selection, land and sea Wind farm configuration foroptimal power generation
Wind Farm and Power Distribution
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More Powerto YouSiain hs Ina sinn f h w’s hihs- fficincy ann anwin in nas.
By Jon Vaquerizo, Project Manager, and Xabier Calvo, Technical
Manager, Indar Electric, S.L., Beasain Guipuzkoa, Spain
Win w is h w’s fass-win ny sc,
wih 37.5 iawas f insa caaciy a in 2009.
th ga Win eny Cnci xcs his sc
w y 160 cn v h fiv-ya i nin
2014. on isin n is ann an nas
(pmgs), as hy ff hih fficincy an sin fxi-
iiy. Ina ecic, S.l., s v a 2.5 mW pmg
f win w aicains wih h aiis a f
achivin an ncn 97.7 cn v f ffi-
cincy a a a in cnvin chanica cica
ny sin a ann an na. Anh a
was incas fanc an fficincy a aia
as, cas win ins fn n a aia a.
taiina i-an-s hs c n achiv
hs as in a asna an f i. ths, Ina
ai canic fi an fi fw siain
faciia h css.
Ina ecic was fn in 1940 as a anfac
f sa cic s. In 1997, i ca a f
Ina, a Sanish nwa ny cany ha
cny hs a a 15 cn a a sha f
win w cnns. Ina cs a wi an f
na cncs, incin -aiina -f
incin nas (dFIg) an nw pmgs. pmgs n-
ay ff hih fficincy a a a an vn
a aia as, sinc h ann ans iina
h n f winins ha, in n, v
hic sss. pmgs as iina h n f shs,
which cs ssi s an ainnanc
ns.
th Ina sin a fac sva aj chans
in vin is nws pmg. Achivin hih fficincy
was h vachin a, h w a n f h
as ha ha siansy achiv f ia
ain. Cin q, cas y h inacin
wn h ’s ann a-
ns an h ss n h sa c,ha c 0.1 cn f
va q. Va hanics
(tHd) in h ha
w 0.5 cn. F h cin
sys, a anin a was s
ainain an a
w 100 C ass -
fanc f h ans v a
20-ya ifi.
Ina nins s maxw
w-fqncy canic fi
siain sfwa f ANSYS vaa h ffc f iffn
is an an is
n h canic fanc
f h na. W-nwn asic
qains w s v
a iinay na sin.
Indar high-speed permanent magnet generator withair–water cooling option
Time
1250
1000
750
500
250
0
-250
-500
-750
-1000
-1250
0.005 0.01 0.015 0.02 V o l t s
Order of Harmonics
V o l t a g e ( % )
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.01 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Magnetic flux density level in the
stator (left) identifies areas of highlosses. The generated voltage (upperright) and fast Fourier transform (FFT)(lower right) results for a no-loadcondition are also shown.
Actual value of 1st order is 99.9
ENERGY: WIND
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enins fis ca a 2-d an, a, a 3-d f h
na, yin iaiy n anfacin awins c h y an aia is f
an sa ainains an cis. th i s f h
siain was ajs ach h ain s f
h na an h n f s in h ann
an. enins sia h fanc f
h s sin n n-a, f-a an sh-
cici cniins.
th ss f h siain inc h va
wav f c y h na, a asn
ha was ca h sin qin s ha
hanic vs c vaa. th va fas
Fi ansf caaiiy in maxw vis
h va a iffn fqncis, ain i
saihfwa caca h hanic vs f a
aica sin.
th havi f h sin in h vn f a sh
cici was anh ian cnsiain. Sh cicis
ay cas y chanica fai in h na,
insain awn w cnv afncin.
enins si h anic fi na in ach
aa f h ann an in a sh cici, xcin
ns ha h an ha h ih is avi
any aa. gnay whn sinin a pmg, Inanins cnsi a wi an f facs, incin h
cniin f an a, aina s,
swichin fqncy an sh-cici (w-has an
h-has) fanc achiv ia an
havi f h ni ifi f h na cici.
In h f-a siain, nins a h
in qi y Ina fqncy cnvs f havaia swichin fqncis achiv nina q,
hih cn an w sss. th a xain incin
vs in h sa cas f hi ian ffc n
fficincy. thh hih incin vs a i ssi
c h siz f h na, hy as incas in
sss. maxw ss shw h isiin f sss
v h y f h sa, viin ianc f
sin chans iv fficincy. Ina nins
cninay ifi h sin, ain c
sss in h sa c, chanica sss, an sss
ca swichin fqncy whn win wih
fqncy cnvs — a whi achivin h h
sin qins.
250
200
150
100
50
0
-50
-100
-150
-200
-2500.95 1 1.05 1.1 1.15 1.2
C u r r e n t ( % )
Time (s)
Magnet behavior in a three-phase short circuit as predicted by Maxwell
100
50
0
-50
-100
-150
T o r q u e ( % )
0.95 1 1.05 1.1 1.15 1.2
Time (s)
Electromagnetic simulation of the balancing operation and inserting therotor in the stator with a crane
Flow speed and temperatures through the tubes in the air–aircooling system
bcas f h an fi’s hih snh vn whn
h pmg is n ain, Ina nins sia h
css f assin an aancin h , nsin i
c safy accish. thy in h v f
anic fcs na whi insin h , which
a i ssi scify assy s ha c
wihsan hs fcs. th na is aanc y
acin i n sas insn wih accasha c fcs na y iaanc in h .
th canic fi na y h in
his css was sia wih maxw ns
i i n inf wih h cas cayin h
acc sinas.
ENERGY: WIND
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Ina nins siansy si h n-
a’s cin sys cas f h inacin wn
cica an ha fanc. th a f h
an ays an ian in is aiiy sis
anizain, s ivns in cin fanc
can incas h an’s aiiy han a sh cici.
oiizain f h cin cici hs iv
fficincy y cin chanica an cin sss.
t iiz h cin cici, nins s ANSYS
FlueNt fi ynaics sfwa f a aisy f fi fw an ha ansf in an an h
na. mshin was a chan cas f h
iffnc in sca wn h sa 5 10 ai
a wn h an sa, wh accacy was
ciica, an h a va 1 nh f h na
an cin sys. t iniiz caina i, 3-d
say-sa anaysis was s in h ajiy f h
sin css, an h siz was c y sin
axia syy an iic cniins. Fi ynaics
ss inc h ca ha ansf cfficins, ai fw
vciy a vy in in h achin cici, ss
f h ai cici hh h na, naa an ha fi, an an win
a. enins s hs ss as a i in
casin a hss y cin vaiains
in cin v h nh f h na.
usin sfwa f ANSYS h Ina asiy
x i aa aa ic sin
vaiains. th canic an fi fw siains
vi fa iansic infain han was avai-
a f hysica sin. Siain vis ss f
any a any in in h caina ain, whi
hysica sin vis ss ny a cains wh i
is acica ca snss. enins w a ia a sin ha a hi scificains n f a
y was i. pvasiv aa anan was
f qicy an asiy y chanin sin aa-
s. ths aas w aa hh hni sin sys, f CAd hh shin
an nay cniins nain f a ss.
th nx s was iin an sin a a-sca
y vify h siain ss an ns h
na’s fncinaiy an if xcancy. tw ys f
sin w f a h s nch: na f-
a hain sin cify na fanc
an aiiy sin vify is iaiiy v i. th
cica an ha asns f h hysica -
y ach vy w wih h siain ss. F
xa, h axi viain f h va sha
icin h as vas was 0.1 cn.
th as fficincy f h nw na was 97.86
cn, hih han h sin a f 97.7 cn, an
nay xacy wha was ic y h siain. th
ain is n f h hihs vs f fficincy f any -
ann an na n h a. Siain a
i ssi achiv his chanin fanc a in
ss han haf h i ha w hav n qi sin
cnvnina i-an-s hs. th siain -
icins ca w wih hysica sin, viin
cnfinc ha Ina can s siain iiz is
cs iv hih fanc n h sanin cniins. n
Fluid dynamics results show air flow variations over the length of the
generator using three different cooling system options. The optionsinvolve modifying the geometry of the slot, windings and magnets.
10
9
8
7
6
5
4
3
2
1
0
A i r F l o w ( % )
Generator Length
The difference between the simulated and measured air flow ratesacross the length of the generator was a maximum of 1.32 percent. Themaximum difference in calculated versus measured temperatures wasonly +/– 3 degrees C for the stator and +/– 3 degrees C for the rotor
magnets. Software from ANSYS provided very good accuracy, which isessential for these applications and for Indar engineers to trust the newdesign variations.
Generator Axial Length
Generator Axial Length
T e m p e r a t u r e
Simulated
Measured
Simulated
Measured
Max. Deviation = 1.32%
Mid. Deviation = 0.5%
Option 3
Option 2
Option 1
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
A i r F l o w ( % )
ENERGY: WIND
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ENERGY: WIND
ANSYS Avana • V V, Iss 1, 2011 27
divn y h n chan h w nain ny
ix, h s f win ins is incasin sinificany
an h w. th ga Win eny Cnci
(gWeC) ics h a a f win ins wi
w f 94 gW in 2007 296 gW f a insa
caaciy y 2012. dnin n h incas in ciciy
an, win w c sy 11.5 cn
12.3 cn f a ciciy an in 2020,
accin gWeC, an wn 18.8 cn an
21.8 cn in 2030.
Hwv, h a f an-as insaains is n
as a as i c . S f his is xain y
annin cnsiains: p n wan hav
win ins si na hi hs. tyica jcins
Where the Wind Blowseninin siain ays a in in h s w fwin fas y icin h s avaia cains.
By Ian Jones, ANSYS Fellow, and Christiane Montavon, Senior Technical Services Professional, ANSYS, Inc.,
and Daniel Cabezón, Wind Specialist, National Renewable Energy Centre (CENER), Sarriguren, Spain
inc visa insin, nis, h ffc n na, an
isancs cas y cnscin an ain.
Fh, win fas affc aa sinas, a
cniin ha is fcin ins away f xs
his cains ha a f sih f annna
insaains. Cnsqny, win fa vs a
cnsiin sis n ncssaiy ia f win w
nain: cains away f his, in ins wh
h fw can cica an nc can hih, an
in haviy fs aas. pacin ins in sch
cnsain sis ans ha wa ffcs can hav a
sinifican iac n h fanc f wnsa
ins, cin w cin an cnsiay
incasin fai ain.
Black Law siteCourtesy Siemens press.
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ENERGY: WIND
ANSYS Avana • © 2011 ANSYS, Inc.28
t vc h sha f an sis, ins is
win in ffsh in sis, wh w ain
nc is xc s in c as f wacvy. t iniiz wa sss an iiz ny
cin, i is via iv cnfinc in h aiiy
f s accay ca hs ffcs.
N a h cain, h is cnsia
canc invs in xnsiv win fas wih a
aan n n invsn (roI). usin cn
icin s, vs a na vi
sfficiny ia sias f jc win w
f chanin sis, faiin saisfy invsn ciia.
dvs a nw in f ways a win w
siain ia f nn-ia sis.
tin as s wihsan sinifican sssscas y sn ain an win ffin. th is
cnsia ins in xnin in if an
cin aina css. unsanin h win
i an nc vs nas a iaiiy in
assssin sia in ys. un h Innaina
ecchnica Cissin (IeC) (h cniz
innaina y f sanas vn aciviis)
in cassificain sys, h chic f in y is
in y h vs f nc innsiy iy
xinc a h si. F xa a Cass IIIb win
in, sin f w win s (7.5 /s a h
hih) an w nc innsiy (16 cn), wi
sjc w as han a Cass IA IIA win in.
Black Law Wind Farm A yica win fa xa is bac law, in cna
Scan, a y Scishpw rnwas.
th si cnains 54 2.3 mW Sins ins an
ccis a f n-cas ca si. In Janay
2006, i was h as ain win fa in h
uni kin.
Wih aivy sa hih vaiains acss h
win fa (axiay 170 s), h cx-
iy n his si is ss a ahy an
asscia wih sinifican fsy an wa
ffcs. Scishpw rnwas an ANSYS
hav cai a caaiv sy n his win
fa nsan h inacins wn h
ins, h ain an h fsy, assss hw
w fi ynaics w f f his si, an
s h ssns an in vin nw sis.
A caisn f ANSYS ss an asns
f h anna ava w f h bac law si
shws ha h sfwa ics fanc w.
th ss as inica which ins a n-
fin, f xa, cas f hi cain
in h fs.
“This type of simulation is useful
in highlighting features not picked
up in other engineering models
a n d i n b r i n g i n g t o l i g h t
the circumstances under which
standard models fail to capture
the detail required. Therefore, it
has a key role to play in managing
the risks associated with modeling
complex wind farms.”– Callum Strachan, ScottishPower RenewablesComparison of average wind power on Black Law, taken
from operational data and ANSYS simulations, shows closeagreement — giving ScottishPower Renewables increasedconfidence in using fluid dynamics simulation for future siteapplication.
N o r m a l i z e d P o w e r
Turbine Number (Highest power on left)
Map of Black Law Ordinance Survey® Crown Copyright 2008,license number 100048580
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Second Wind Avanc nc s a iiz win in sacin.
By Thomas Hahm, Fluid & Energy Engineering GmbH & Co. KG,
Hamburg, Germany
Wih h ga Win eny Cnci jcin ha win
w insaains wi w 409 iawas in 2014, h
an f an cci y win fas is cin a
sis cncn. th iss is aay ciica in gany
cas f ns ain an h cny’s ashi
in yin win w. tyicay h a is na
as ch w as ssi a h ws cs f a
ivn win fa si. b h a awacs sacin
win ins cs h, incin w w
an wa ffcs.
Fi & eny eninin (F2e) gH & C. kg is
inin h s f avanc nc s sch
as a y siain (leS) incas h accacy
wih which ins can si wihin a win fa. th
n s wi h aiiy na ny f
a ivn v f an.
th wa f a in has sinifican ffcs — incin
c w an sh in if — n any
in in is ah. exacin ny f incin win
cass a ss in h inic ny an vciy f h win
in h wa f a in. this ny is cv v is-
anc as h wa xchans ny wih h snin
win. tnc c in h wa f ins an
nc c y ain fas sch as fss
his can hav a ssania iac n in if. thffcs f nc can vay wih h fw an an
incinain f h incin win. F xa, n f h
s aain scnais is whn n haf f a
xincs nc f an win in an h
h haf is xs nis fw.
Atmospheric flow over the Bolund peninsula (Denmark) with wind
direction from the escarpment on the west side. The red colorindicates high wind speeds, and blue indicates low speeds.
Wind field behind an ENERCON E-66 wind turbine with hub height of65 meters. The blue color indicates high wind speeds, and whiteindicates low speeds.
Meandering wake behind an ENERCON E-66 wind turbine. Bluerepresents high wind speed, and white represents low speed.
ENERGY: WIND
I m a g e © i
S t o c k p h o t o . c o m / c h r o m a t i k a
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In gany, an anizains an ay ah-
iis qi an assssn f vy nw win fa jc
ns ha nc as na y ain anwin in was a wihin acca sin iis.
tain an win in was s cnsi
h cas hy hav aiiv ffcs n -
nc. tyicay, h aach cin hs as is
s sana iica fas sia ain-
na an wa-na nc innsiy an
s a n hy sia h ain n
h as.
Hwv, h accacy f hs iica cacains
can ii cas hy n inca h aca
y f h s an ain. th s is ha h
cacains n haviy caia csaf win fa sins. ths iica s shw
ha win ins yicay s sac a a isanc
f a f ias f ach h. rqi
sacin can vn a if ain-na
nc is a aj fac.
dvs f win fas a anin
acca hs f cacain h nc innsiy
na y was an ains s ha hy can c
ny f a ivn ac f an. F2e has n
sin caina fi ynaics (CFd) v h as
ca ass his ian iss. th cany’s
nins nay hav ha i ifficy in inin
h win vciy in h wa f a in, cacain
h nc innsiy is ch chanin.
Cnvnina ryns-ava Navi–Ss
(rANS) s c h caina i qi
sia n fws y i-avain h vciy
fi, ss, nsiy an a v i. this
aach iinas nc fcains an as i
ssi n fw in a asna i n
s cs. rANS hs a ffciv a -
icin h va an say-sa havi f a win
fa; hwv, hi accacy sffs in in nsayn fws ha a yicay fn in win fas.
ov h as h yas, F2e has s h leS
nc wih vy siiv ss. I nicay
svs h a nc scas an s h
sa scas vi acca ansin sins f
h fwfi. ms cny, F2e nins s ANSYS
FlueNt sfwa h f y f w
eNerCoN e-66 win ins wih 66 s sin
h leS chniq. th fi ynaics ss w
vaia wih aa cc in an aca win fa sin
asnic ans. Fi ynaics accay
ic h vciy f h incin win an wih
nc innsiy a h wnwin in v h
wih f h wa.Fi ynaics i a j f icin h vaia-
in in h vciy v a i f 300 scns, a fi
ha can s caca nc innsiy an h
aynaic as ha nc cas. Qic hi-
zna shifs f h wa f n si anh a
ca n a 25 scn i sca. Anh ciica
fac in achivin his v f accacy was h acca
in f h incin win fi an, aicay, h
vaiain in is win icin an h win sha.
Fi ynaics an leS chniqs f ANSYS can
s caia an ay iv h accacy f
iica cacains ha a cny s cacaa as n wa cniins. Cacain f a
as sh a i ssi ssaniay incas
h an f ny ha can na y nw
win fas an incas h safy an h ifsan f
win ins. nModel of a wind turbine used for computational fluiddynamics simulation
Simulation of local turbulence intensity (blue line) compared tomeasurements (red dots) across width of wake
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
T I [ - ]
Width of Wake [m]
-150 -125 -100 -75 -50 -25 0 25 50 75 100 125 150
Measured (green line) and calculated (blue line) values for velocitymagnitude at hub height in center of wake over 180 seconds
10
9
8
7
6
5
4
3
2
1
0
V e l o c i t y [ m / s ]
I [s]
100 120 140 160 180 200 220 240 260 280
ua Snic 2-d leS Siain 2-d
ENERGY: WIND
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AEROSPACE
sin h vhic a a a w s f safy
an saiiy wih sain. Sa icin can s a
iffic , vn f shisica CFd s.
Hwv, wih cs s f ANSYS xs,
tafia v a ai ninin aach
ncssay ain acca icins, incin h
s f a via a (Vbm) ha in h
fi ynaics sfwa an ca aiina caai-
iis h tansiin’s . Af yin
h sciay Vbm , h a sha h win an
Production prototype design showing airflow pathlines over the vehicle body. The VBM plug-in to ANSYS FLUENT enabled
Terrafugia engineers to model the vehicle’s propeller under near-stall conditions, which helped to ensure the safety of theaircraft while in flight.
h ain f h y as n ach h wih
an cn-f-aviy qins f h vhic.
th nw sin ivs h h in-ai an n-a
fanc f h tansiin as w as nss ha h
vhic ns isf f-sca anfacin. tafia’s
a fn ha siain sfwa f ANSYS was
ciica in avancin h h cin y
sa wih a hih f cnfinc in hi sin.
th cany cis ANSYS s f hin in
hi c a s qicy. n
Windows®. Life without Walls™.HP recommends Windows 7.
© 2010 Hewlett-Packard Development Company, L.P. The Intel Logo, Xeon and Xeon Inside are trademarks of Intel Corporation
in the U.S. and/or other countries. Microsoft and Windows are U.S. registered trademarks of Microsoft Corporation.
with theHP Z800 Workstation
Powering
Visit www.hp.com/go/ansys for more information
with Intel® Xeon® processor
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Glass JawSiain hs sv cia jawsin in h la Han Ci.
By Alessandro Bertarelli and Alessandro Dallocchio, Engineering Department, Mechanical
and Material Engineering Group, European Organization for Nuclear Research, Geneva, Switzerland
th la Han Ci (lHC) a h ean
oanizain f Nca rsach (Cnsi eén
a rchch Ncéai, CerN) is h w’s as
an s wf aic acca. tw as f
saic aics ca hans — ih ns
a ins — av in si icins insi h cicaacca, ainin ny wih vy a. th lHC’s
cias sca away aics ha hav n sihy
ff ac vn aa h hihy snsiiv s-
cncin ans. b h cias n a
wihsan an ha ih n h wih a
ssania facin f h a isf — cnsiin ha
h a c as 1 n f c.
Whn sachs s h lHC cia y
wih sva shs a iffn a innsiis, hy
iscv ha h can–can cia jaw nicy
sviv h iac, is a s sff a
ann fcin sn nh h cia
f acin. CerN saff iiay s w n-
san wha cas h an hw cc i.
Si na gnva, Swizan, h lHC is in
xi y hysiciss sy h sas nwn
aics ha a iin cs f a hins. th a
ss h lHC -ca cniins ha xis js af
h i an y ciin w as ha-n a vy hih
ny. th a f sy is h His sn, a hiz n y iscv aic ha ay h xain h
asss f vais saic aics. th lHC is in
s s a a ha is iv a
96 cn f h ass f h nivs. Sciniss h
iscv h iffncs wn a an ania
h in nsanin why s i ania is f in
h nivs vn hh h i an is iv hav
c qa ans f a an ania.
th lHC ss a s ny f 360 mJ a.
this is w h s f ani av wha h
n cis can han. CerN’s ci is cnain
in an nn cica nn, 50 s 175 s
, wih a cicfnc f 27 is. th ci
nn cnains w ajacn aa a is, an
ach cnains a n a ha as in si
icins an h in. th aa as insc
a f ins, fcin h ci wih ach h.
S 1,232 i ans h as n a cica
ah, an an aiina 392 qa ans fcs
h as incas h chancs f cisin a h in-
scin ins.
th s ciica ns f h cias a h
jaws, which a a f can–can csis,which ncic h a an a sin c any
say aics ha saa f h a. th jaws a
s y a az sanwich sc ncassin
h ain s a, cin is an infac a.
SCIENTIFIC EQUIPMENT
Collimator cross section
5mm
Finite element model of collimator
3-D contact elements
with friction
SOLID45 – eight-node brick elementwith initial strainto simulate springpreload (three bar)
Cooling pipes – internalpressure 15 bar
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th cia is a is whn h a is v f
n acca in anh. this ns n
fqny cas h a is acca axiny y vin i hh a faiy f ssivy
wf accas. kic ans a s nc
h a f is cn in an injc i in h nw
in. If h is an in h cnfiain f h ic
ans, h a ih s ch
in n icin. th cia s a wih-
san accins sch as an injcin ha ay cas
3 .2 x 10 13 ns ach wi h an ny f
450 iacnv (gV) hi h cia jaws. An
cn v is h inic ny ain y an cn
whn i accas hh an cic nia iffncf 1 v.
t vaia h cia sin, nins cai
ss sin anh CerN acca n a fy
aina y f a cia. th jaws w
si a sis f iacs a 450 gV v 7.2 μs.
masns f n jaw assis an a
ss va a ann fain f h a
s f v 300 μ. CerN sachs hiz
ha his fain was cas y hay inc
viains vy fas hain. evn whn a sc
is f xan, whn h hain css is fas han
h yica sss axain i, aia inia vns
f ha xansin, casin sss wavs. Siain
was cay qi nsan h .
Aicains wih sch a chanica cxiy
a yicay ass wih xici ynaics cs.
b f his cas, xici anaysis w hav n vy
awwa cas f h n f ihysics inain
an h cxiy f h chanica sc, which
incs iffn aias ha a h h wih
cas. Sinc h ssss a w w h asic
s, h a n shc wavs ha w qi an
xici ynaics c. th c insa
sia sin an iici fini n fwin
h s f h-asiciy. ANSYS mchanica iici
fini n anaysis sfwa vis ihysics
caaiiis ha ina ha an chanica
anaysis. In his aicain, inain incass
accacy an cs h an f i qi
a h . ANSYS mchanica as ffs c-
hnsiv n chny, an xnsiv iay f
aia s, a cnac cin f assis
an wf sv caaiiis.
th ciain c was as a cana
a, siy s a is s. th ny isi-
in ai h cia was in wih
FlukA, a aic hysics mn Ca siain
aca. th a ny was inc h fini
n in h f f a 3-d a sin h HgeN
can. tansin ha siain was s
caca h a isiin as a fncin f
i. rsachs f sca ynaic anaysis
y ayin h a isiin as na ain
a iffn i ss. easasic anaysis s h
iina inaic hanin f aic
cnns. th a v scia aihs
ay a a isiin chanin in i an
sac a iffn sss f h asic–asic anaysis.
th inain i s f 0.1 μs was as n h
Flexural vibrations
Temperature distribution incollimator, where blue is minimumand red is maximum
Residual displacement based on physical measurements (left) and simulation (right) matched very closely.
100 200 300 400 500 600 700 800 900 1000
0
-0.05
-0.1
-0.15
-0.2
-0.25
-0.3
T r a n s v e r s e d e f o r m a t i o n ( m m )
Jaw Longitudinal Position (mm)
CFC assy CFC assy Graphite bloc Graphite support
SCIENTIFIC EQUIPMENT
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SCIENTIFIC EQUIPMENT
iinay anayica siain avi nica
ain. Finay, saic anaysis vaa sia asic
fain.
th siain ss inc h a is
hh h sc, ain i ssi s si
fas ic asicizain. th axi sss is
w av h ina ii f c, s h ha
shc na asic sains, as hiz y h
sachs. th as sia asic sains f 0.12
cn w sn in h 3– hic c a. ths
sains a ccnic wih sc h na axis
f h a s, ain ann fcin
away f h a axis.
th siain ss ach h hysica as-
ns aay csy. Whn cain h hysica
asns in h in ah h siain
icins in h cn , h ansvs sia
fcin f 350 μ ic y h siain csy
ach h as va f 300 μ. th ynaic
sns ic y h siain as ca w
wih as d vi asns. th
siains a hih in ani han h hysica
asns cas h siains n a
ain in accn.
th sy a, a f sni an jni
nins, fws, an sns, s h vaia
siain as h iay sv h .
CerN sachs vaa a n f iffn
is an aias in hi iac n h
siain f h s sc. usin hs ss,
hy ci ify h jaw assy sis sin y
chanin h hin a aia f oFe-c h
hih yi snh gic® aia. gic is a faiy
f c-as a aix csi ays ix
iaiy wih ain xi caic aics. th
aiin f sa ans f ain xi ay
incass h c’s sisanc ha sfninan nhancs va a snh.
An a f h sis jaw assy
incin C-Ni is an gic s a an hin
as shw ha fcin was c f 300 μ
16 μ, which was wihin acca iis. this
fi was cnfi y xina ss cai
n a scn y f h cia. th s f
siain in his aicain a i ssi aiy
ians h an v an acca sin
whi iinain h n i aiina -
ys, xcin h fina sin. ANSYS mchanicasfwa ay a y y viin h f an f
hysics caaiiis n accay sia a vy
cx . n
Simulation predictions correlate well with measured deflection.
Deflection was substantially reduced in the new design.
Measured displacement - 1 batch
FEM - scaled to 1 batch
1dof damped
0.E+00 1.E-02 2.E-02 3.E-02 4.E-02 5.E-02 6.E-02 7.E-02
2.50E-04
2.25E-04
2.00E-04
1.75E-04
1.50E-04
1.25E-04
1.00e-04
7.50E-05
5.00E-05
2.50E-05
0.00E+00
Time [s]
D i s p l a c e m e n t [ m ]
Measured displacement - 2 batches
1dof - no damping
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ANALYSIS TOOLS
a, wih h as in h s ian. A
hysics-as as can vi ins ha w
hwis n xina sin ain. th s
fas hysics-as iinay was s y
pfss Jhn Nwan f uC by. Sch a
has n in in Si sfwa f ANSYS
aw inain f any ian facs in
ay sin.
Cha an ischa cyc ss can
an wih cncnain fis in ischa. F
his infain, iizain f h iniia csiin f
cys in h c can f. Whn his sy
was f, ss shw ha a hih iniia
cncnain f cys as as swha wcnciviy in h saa a ch hih cnc-
iviy in h csi cah, wh his is xy
ian. by in cncnain fis n
iffn as, ay sins can in
whn h iiin cn ccs scify h -
a an ha h sys ns ainain avi
achin iiin cn. In aiin, ay ni is a
sn fncin f a, an ay ni is
n wih hih ain a. this can
cnfi f a hysics-as cchisy ,
i sns anh : Hih a
ins safy cncns, shns ay if, an csanh iizain iss in ay sin.
Sys-v sin nins win a h
ac v hav a iffn s f qins. tyicay,
hs nins cann aff sia as any ais
as nins win a h c v can; hy as hav
a iffn s f siain as. enins sin
caina fi ynaics (CFd) f ay ha
anan a ins in ainainin hsi a an, cin ss an
ainainin a nifiy. Fi ynaics has
n wiy s ic fw an ha ansf in any
insis, an i ais w ay ha ana-
n. by sin h ANSYS Wnch af wih
ANSYS CFd sfwa, a c ay ha–fi
ynaics anaysis, incin iizain, can n
niy wihin h sa nvinn.
Whi fi ynaics siain can iv ai
ha infain a ay ha anan
syss, i is i cnsin f any ansin
siains n iffn iv cycs. m cin chniqs xis f xacin a f
CFd ss, an h xac , ca Fs nw
, ivs h sa sin as ha f h f
CFd — i ns ch fas ca wih
CFd. th cin css is han a-
aicay y Si sfwa sin CFd ss as
ins. this css ns h f siains ha
w hwis hav n iacica, sch as ay
ha cn sys anaysis.
F cica nins, h iay cncn is h
cic fanc f h ay ah han h ha
Battery charge and discharge cycle results from JohnNewman’s electrochemistry model
Concentration profiles during galvanostatic discharge
Fluid flow solution for the 16-battery cell module
A complete battery thermal–fluid dynamics analysis includingoptimization can be done using ANSYS FLUENT softwareentirely within the ANSYS Workbench environment.
C e l l P o t e n t i a l ( V )
Time (hr)
C u r r e n t ( A )
c ( m o l / m ^ 3 )
20
15
10
5
0
-5
-10
-15
-20
2600
2400
2200
2000
1800
1600
1400
4.3
4.1
3.9
3.7
3.5
3.3
3.1
2.90 1 2 3 4 5
0 0.2 0.4 0.6 0.8 1
t = 1 min
t = 5 min
t = 10 min
t = 40 min
X
Automotive battery module with 16 cells
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Comparison of CFD results with Foster network results. Inthis case, the Foster network model took 20 seconds to run,whereas traditional CFD required a few hours.
0 500 1000 1500 2000
299
298
297
296
295
Time (Sec)
C e l l A v e r a g e T e m p e r a t u r e ( K )
ANSYS FLUENT Cell 3
ANSYS FLUENT Cell 10
ANSYS FLUENT Cell 15
Foster Network Cell 3
Foster Network Cell 10
Foster Network Cell 15
fanc. An acca an y si--s ha
ha cs wih a ay cic cici is
qi. this can accish hh VHdl-AmS,an Ieee® sana hawa siain ana
s y Si.
dsinin ais f HeV/eV invvs any
chans, an sins fcsin n iffn ascs
hav iffn qins. th nfi wih ANSYS
sfwa is ha i ffs s anin f c-v
cchisy sys-v ha anan. n
ReferenceHu, X.; Lin, S.; Stanton, S.; Lian, W. A Novel Thermal Model for HEV/EVBattery Modeling Based on CFD Calculation , Proceedings of IEEE EnergyConversion Congress and Expo, Atlanta, U.S.A., September 12–16, 2010.
Hu, X.; Lin, S.; Stanton, S.; Lian, W. A State Space Thermal Model for HEV/ EV Battery Modeling. SAE , 2011, 01-1364.
Fuller, T.F.; Doyle, M.; Newman, J. Simulation and Optimization of the DualLithium Ion Insertion Cell. Journal of Electrochem. Soc., 1994, vol. 141,pp. 1–110.
ANALYSIS TOOLS
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43/49
Microbubbles KeepGreen Energy Blooming Aa-iv if cin sa sn s f fw siain.
By William B. Zimmerman, Professor of Chemical and Biological Engineering, University of Sheffield, U.K.
th w facs a sha f fssi
fs; a h sa i, ffs a
in a c can ixi
(Co2 ) issins. pcin f i-
fs f cain ins f aa ffs
a nia sin h s.
li h hsynhic aniss,
aa ca Co2 an snih an
hn cnv h ns xyn
an h ny qi f hi if
cycs. th aa iass isf incs ins, ca-
hyas an fay acis. I is hs fay acis — naais — ha ff a nia as a nwa fsc
f finis, wh hy can ansf in f
w asin is nins.
Hwv, s csss anfac aa-
iv ifs a xnsiv cciay
via — sinc h ws cin ics in h uni
Sas a cny in h $20 $30 an an.
tw f h as css invv a h caia xnss
qi i h iacs (cin aa n a
a sca) an h ny qi a h.
t c hs css, n f h
vin aicains in s-
i is inc Co2-ich fssi f
xhas ass in h iac as
ics. An h s
acin his is a sach
a f h chica ninin
an a h univsiy f
Shffi in h u.k. th
has a a aj s fwa in
cin h cs f cin aa ifs f
xhas ass y cain ics ha a a20 icns in ia. th aj avana f sa
s is ha hy hav a hih sfac-aa--
v ai. bcas hs 20 icn ics a
50 is sa han cnvnina 1 ii fin
s, hy hav a csniny hih sfac aa
ni v. ths, hy vi 50 is a ass
ansf as, which c niay ansa in a
nf hih yi in aa if cin [1].
th y cin s his sa is a niq
scia sin v sin ANSYS FlueNt fi
ynaics sfwa (a f a fi ynaics Acaic
pc n f ANSYS) vaa h iniiasin cnc an f aaic sis sc
aia nzz wih an fw as ha vi h
ih ain cniins. th aiina h f
cin s f acs has n fc h as
Left: A conventional gas diffuser producesrelatively large bubbles. Right: A gas diffuserwith the fluid oscillator shows tremendousreduction in bubble size.
Schematic representation of fluidic oscillator
Cover plateshowntransparent
Flow from high-pressure port X2 to low-pressure port X1
Fluid oscillator driving microbubble generation system
I m a g e © i
S t o c k p h o t o . c o m / k a m i l .
www.ansys.c ANSYS Avana • © 2011 ANSYS, Inc.44
ACADEMIC
Growingsmall airbubbles
Bubblesblownaway
Air flow pulse
Air supplyFeedbackloop
Fluidicdiverteramplifier
Water tank
Air bleedingto atmosphere
A
Waterflowpulse
B
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n ss hh a aic f vy sa hs. Whn
finay saa f h nzz, hwv, h hasa ia ha is fn any is a han h h,
cas is saain is cn y h sfac nsin
f h wa. th y ia f h Shffi a’s ic-
nain h was ii wh
i sin an scia sy as h
fain hs. gwh is ina a h n f ach
s f as. bs a hn v f h nzz
sin a s f wa ha anas wih h as ss
s h wh f nw s can in in h nx sci-
ain i. usin his h, n can ach h
siz yicay f f say as win.
In h scia sin [2,3], say as fw issi h scia in. th ain fw sa hn
xis n f h w channs nin n h
acin ai y fw hh a iicina cn .
th fw xis hh h chann, casin
a cas in ss a h cn nzz. th
cn nzz hn aws as hh h fac
f h w cn nzz, wh h ss is
hih. Af h fw in h fac ains
n, h fw xiin h cn nzz
cass h ain j — cas f incn ( aifi-
cain) ffcs — iv h w chann.
Af a ay n f h fac fw ainn in h si icin, h ain j is
iv ac h , sin in a iic
swichin css. th fqncy f h sciain is
cn iaiy y h nh f h fac
an h as sy fw a.
Shffi’s a f siain f an ay
scia y wih ANSYS s. rsachs
sh h 3-d y wih 70,000 aha cs
an s h naizain (rNg) -ε
han nc a w ryns ns. th ss
ach h fanc aas f h ay -
y, s h a c s fi fw siain
iv h vic’s cnaiiy, incin via sin
f is wih iffn cn nzz wihs an
iffn in fw nay cniins. th sachs
ca h ss f h iffn sin anaivs
an hn sc h fina f-f-cnc sin.
Wih h n 50-f incas in ass ansf a
aff y his scia sin, Co2 issa is acc-
a in h iac an sh nhanc aa wh
a y a fac f 10. th ics fficiny
si h xyn ha aa i in hsynhsis,
hs iin ch hih aa nsiis in h wa.
ths ivns sh ssaniay c h
caia an ain xns qi f a ivn v
f if cin, as aa can wn
qicy in a sa an f sac.
byn isayin a scha wh a,
h xins shw an 18 cn cin in h
ny qi f cin ca
cnvnina fin s. rsachs ai his,
in a, c ficin sss h sciayfw. th a hs ics ha ninin siain
wi ay an vn a in h cin sin f a
ccia-sca iac, whn i wi c ciica
iiz a cnns f h sin iniiz
caia xnss. n
References[1] Zimmerman, W.B.; Zandi, M.; Bandalusena, H.C.H.; Tesař, V.; Gilmour,
D.J.; Ying, K. Pilot Scales Studies of Microbubble Mediated Airlift LoopBioreactor Growth of Microalgae Dunaliella Salina. Applied Energy ,submitted in 2010.
[2] Tesař, V.; Bandalusena, H.C.H. Bistable Diverter Valve in Microfluidics.
Experiments in Fluids , 2010; doi:10.1007/s00348-010-0983-0.
[3] Zimmerman, W.B.; Hewakandamby, B.N.; Tesař, V.; Bandulasena,H.C.H.; Omotowa, O.A. On the Design and Simulation of an AirliftLoop Bioreactor with Microbubble Generation by Fluidic Oscillation.Food and Bioproducts Processing , 2009; Vol. 97, No. 3, pp. 215–227.
Top view of velocity magnitude contours on midplane of oscillatorshowing supplied gas flow directed into the upper outlet channel andno flow through the two teardrop-shaped control nozzles
3-D view of gas flow pathlines released from a plane cut in the zdirection and colored by velocity magnitude. The cusped splinter noseat the junction of the outlet channels generates an internal feedbackloop that initially helps to direct the main flow to the upper outlet.
Pathlines later in the cycle showing that flow through the control nozzleshas overcome internal feedback and the main jet is being switched tothe lower outlet channel
ACADEMIC
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ACADEMIC
Reforming a Fuel CellModeling ProcessCin fw siain wih cx chisy s insa ni fn anayzin ain- ny syss.
By Robert J. Kee, George R. Brown Distinguished Professor of Engineering, Colorado School of Mines, Golden, U.S.A.
Sinc is asic inci was fis
nsa in h ay ninnh
cny, f c chny has
vv in any iffn vaiains.
th nyin chanis cn
a f cs is cnvsin f
chica ny in ciciy y
ans f fin h f in
hyn an wih h ssqn
cchica xiain f hyn
in wa. dnin n h y f
f c an is aicain, h f
can ih hycans — sch
as naa as, an han
— havi iqis, i is
j f . th y avanas f f
cs v syss ha n fssi
fs inc fw vin as an
va c an issins.
S f h chans in vin
f cs f wisa s
a h hih cs f caays h
faicain aias, h ifficy f
hyn sa, an vy cx
chisy.
Si xi f cs (SoFCs) inaica hav n h sjc f
ch sach in cn cas:
thy hav h aiiy f any
iffn fs, an hi hih ain
as ff h
si nfi f sin h
xhas ha ny.
Wih s f h
u.S. offic f Nava
rsach, a a f
h Ca Sch f
mins (CSm) has n
win wih ANSYS
sia in s
h chisy,
cchisy an
fi chanics f an
SoFC sac sys.
Sch a sys — f
xa, an axiiay
w ni (Apu) s
y a Navy vss —
cny ciss a
sh-an- sin ha incs