optimization of perforaters size & shape of a reactive muffler
DESCRIPTION
its my project workTRANSCRIPT
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Optimization of perforators size for a reactive muffler
Under the guidance of Dr.N.V.V.Sudheer By, Surendra
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ContentAbstractIntroduction to mufflersLiterature reviewIdeologyData gatheringDesign & Its considerationsAnalysisResultReferencesFuture work
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Abstract
In every reactive mufflers perforators place an important role. Here my project goal is to find out the optimum shape of a perforator & its size at similar conditions by performing cfd analysis.
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Silencer kills noise in st flow by using absorbing material.Where as muffler kills noise by blocking the flow.Resonator reduces noise by using reducers.
Silencer mufflerresonatorNoise Reducers
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Introduction To Mufflers
What is a muffler?Muffler components Different types of mufflers Mufflers uses & its drawbacksIntroduction to exhaust systemDifferences b/w mufflers
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acoustic soundproofing device designed to reduce the loudness of the sound pressure created by the engine.Muffler components:- a)body b)inlet c)outlet d)support plates e)baffle plates f)absorbing material e)perforators ,,,,,etc.. Support platesBaffle plate
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Different Types Of Mufflers
AbsorptiveReactivecombinational
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Literature Review
Muffler for I.C engine-US4834214A a)it is an absorptive one b)perforaters size 0.05 to0.375 inch c) no back pressure d)tail pipe
Muffler for I.C engine-US4577724A
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Exhaust muffler-US 20130048416 A1
Design & optimization of exhaust muffler
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Ideology & Data Gathering
Here my idea is knowing about effect of perforators size & shape on back pressure, shear stress, force & normal force on reactive muffler.Data gathering :- dimension are taken from walkers mufflersThickness are taken from sheet metalsPressure is taken from some research site ,,,etc..
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Design & Its considerations
Considerations:-Tolerance are taken as zero dimensions are taken from walkersAssembly is a welded or fixed one with respect to displacement.Sheet of 3 mm for all is considered ,,,,,etc.. Software : CATIA-V5
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Analysis
Considerations:-Heat transfer to atmosphere is not consideredAir is to be at high temp & muffler is at room temp.Material is to be considered as homogeneous ,,,etc..Software: solidworks-2013(flow simulation)Inlet condition outlet condition mass flow
Temp:500kPressure:225654paTemp:298kPressure:101325pa2.91kg/sec
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Result
shapeR=relative pressure
S=shear stress
H=heat flux
T=temp
Area
2P:1617000 paR:1336000 paS:62 paH:3135 w/m2 /kT:460 kP:1551610 paR:1268965 paS:H:2450w/m2 /kT:301 kP:1632500 paR:1349500 paS:65 paH:3000 w/m2 /kT:374 k2.5P:1555680 paR:1273020 paS:60 paH:2900 w/m2 /kT:375 kP:1614400 paR:1332000 paS:79 paH:2800 w/m2 /kT:365 kP:1348500 paR:1066500 paS:49 paH:5200000 w/m2 /kT:321 k
3P:1605800 paR:1325400 paS:62 paH:2700 w/m2 /kT:362 kP:1612500 paR:1329500 paS:59 paH:2850 w/m2 /kT:369 kP:1539000 paR:1257000 paS:44 paH:3200000 w/m2 /kT:343 k
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References
Pressure was taken from:http://www.4wdmechanix.com/How-to-Tuning-the-Fuel-Injected-Jeep-Inline-Six-Stroker-Motor.htmlcost was taken from:http://www.alibaba.com/trade/search?fsb=y&IndexArea=product_en&CatId=&SearchText=302+stainless+steel+3+mm+sheet++priceproperties of material are taken from:http://www.suppliersonline.com/propertypages/302.aspdimensions are taken from:http://www.walkerexhaust.com/catalog/walker-exhaust-systems/universal-muffler-dimension-searchMuffler for I.C engine-US4834214AMuffler for I.C engine-US4577724AExhaust muffler-US 20130048416 A1DESIGN & OPTIMIZATION OF EXHAUST MUFFLER & DESIGN VALIDATION Design And Optimization Of Exhaust Muffler In Automobiles Youtube.com(tutorials of catia;;solid works) ,,,,,etc..
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Future WorkI would like to use some optimization technology like anova approach.Preparation of bookSome data have to be collected like graph & some analysis results.
,,,,etc.