車用消聲器cfd模擬及壓力損失試驗(yàn)臺(tái)的研制

1、武漢理工大學(xué)碩士學(xué)位論文車用消聲器CFD模擬及壓力損失試驗(yàn)臺(tái)的研制姓名：鄒雄輝申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：動(dòng)力機(jī)械及工程指導(dǎo)教師：顏伏伍20070401武漢理工大學(xué)碩士學(xué)位論文AbstractWiththehi曲一speeddevelopmentofAutomobileIndustryAutomobilenoisepollutionhasbecometheglobeproblemTheexhaustnoiseisoneofthemainno

2、ise80urs，whichcomesfromvehicleenginesInstallationexhaustmuffleristheeffectivemethodfornoisereductionTKsarticlehasintroducednoisereductionprinciplesandmethodsformationmechanismofvehicleexhaustnoise，sortsofvehicleexhaustmu

3、fflersThiSarticlehasdesignedamufflermodelbyPROEsoftwareAftersimulationbyFLU烈TwhichiSonekindofCFDsoftwaretheinsidesituationofthemumel“hasbeenanalyzedinthisarticle，suchasflowfield，temperaturefieldandpressurefieldetc111eper

4、formanceofthemufflerhasbeenevaluatedbytheresultofthepressurelossofitAftersimulatingtheremodelofthismufflersomeplansforremodelmufflerhavebeenintroduced，whichCaninstructtomufflermodificationAtestbedformeasuringpressureloss

5、ofvehiclemufflerhasbeensetup11listestbedWasadoptedadose—loopcontrolsystemThroughdataacquisitionsystem，fluxvalueofthetestbedCanbeacquiredbycollectionthesignalsofthefluxsensorIfthefluxvalueislessthanthetarget，controlsystem

6、wouldchangethefluxvaluebyregulatingthetransducerWhile，ifthefluxvaluehasreachedthetargetsteadily，collectingthesignalsofpressuresensorthepressurelossofthismufflerhasbeenacquiredatlastnlecontrolprogramCanrealizetwocontrolme

7、thodsautomaticandmanualcontr01ItisconvenientfordatastorageandoutputAftertestingthemufflerbythistestbedtheresultofpressurelossc她tallywiththesimulatingresukKeywords：Automobile，mufflerCFD，flowfield，pressureloss，testbed，data