083 ling wan stc
DESCRIPTION
Ling WanTRANSCRIPT
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1www.cesos.ntnu.no Ling Wan Centre for Ships and Ocean Structures
Model Test of STC Concept
Ling Wan
4th September, 2013
www.cesos.ntnu.no CeSOS Centre for Ships and Ocean Structures
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2www.cesos.ntnu.no Ling Wan Centre for Ships and Ocean Structures
Concept Introduction
Spar floating wind turbine (Spar) and Heaving wave energy device (Torus) Combination
Produce more power Sharing mooring and cables Positive effect for motion
Simulations have been carried out Positive synergy during operational
condition Challenge in survival condition
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3www.cesos.ntnu.no Ling Wan Centre for Ships and Ocean Structures
Model Test
To investigate two survival modes Motion Forces between Spar and Torus Mooring force Validate simulation results
Model set-up Towing tank in MARINTEK
L=260 m W=10.5 m D=10 m
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4www.cesos.ntnu.no Ling Wan Centre for Ships and Ocean Structures
Model Test
Model set-up Model Wave probe Fans Mooring points Cameras Tracking system
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5www.cesos.ntnu.no Ling Wan Centre for Ships and Ocean Structures
In the Test
Structral test Decay test Regular wave test
SUB_RGL_H0.04_T1.839 NWL_RGL_H0.18_T2.405 Mathieu instability NWL_RGL_H0.18_T1.697 Slamming and Green water
Irregular wave test NWL_IRGL_WIND_HS0.306_TP2.192 SUB_IRGL_WIND_HS0.306_TP2.192
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6www.cesos.ntnu.no Ling Wan Centre for Ships and Ocean Structures
Some results
Time [s]
160 180 200 220 240 260 280 300 320
M
o
t
i
o
n
[
m
]
-0.06
-0.04
-0.02
0.00
0.02
0.04
0.06Heave DecayPeaks
Angular Frequency [rad/s]
1 2 3 4 5 6 7
R
A
O
[
m
/
m
]
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
Surge_H0.04Heave_H0.04Surge_H0.18Heave_H0.18
Angular Frequency [rad/s]
1 2 3 4 5 6 7
F
o
r
c
e
R
A
O
[
N
/
m
]
0
20
40
60
80
100
120
140
160
180
FX_H0.04FY_H0.04FZ_H0.04FX_H0.18FY_H0.18FZ_H0.18
Angular Frequency [rad/s]
1 2 3 4 5 6 7
R
A
O
[
d
e
g
r
e
e
/
m
]
0
20
40
60
80
100
Pitch_H0.04Pitch_H0.18
Time [s]
500 510 520 530 540 550
M
o
t
i
o
n
[
m
]
-0.3
-0.2
-0.1
0.0
0.1
0.2
M
o
t
i
o
n
[
D
e
g
r
e
e
]
-6
-4
-2
0
2
4
6
8SurgeHeavePitch
Angular Freq. [rad/s]
0 2 4 6 8 10
M
o
t
i
o
n
S
p
e
c
t
r
u
m
[
m
2
s
]
0.000
0.005
0.010
0.015
0.020
0.025
0.030
0.035
0.040HeaveSurge
Angular Freq. [rad/s]
0 2 4 6 8 10
M
o
t
i
o
n
S
p
e
c
t
r
u
m
[
d
e
g
r
e
e
2
s
]
0
10
20
30
40
50
60
70Pitch
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7www.cesos.ntnu.no Ling Wan Centre for Ships and Ocean Structures
Some results
Time [s]
281.0 281.5 282.0 282.5 283.0
F
o
r
c
e
F
X
[
N
]
-25
-20
-15
-10
-5
0
5
10
15
F
o
r
c
e
F
Z
[
N
]
-120
-100
-80
-60
-40
-20
0
20
40
60
80
100
FXFZ
Phase I Phase II Phase IPhase III Phase IV