发动机进气系统消声器的气动声学性能研究

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1、上海交通大学硕士学位论文发动机进气系统消声器的气动-声学性能研究姓名：张晓东申请学位级别：硕士专业：动力机械及工程指导教师：杜朝辉20070701上海交通大学工程硕士学位论文摘要模拟分析与实验研究，对消声器的设计应用具有指导意义；3.设计搭建了管路系统气动—声学性能实验台，利用数值模拟与实验研究了含阻性消声器和进气管路的进气系统的气动—声学性能，为进气系统的低噪声系统优化提供理论支持；4.基于Powell涡声理论对复杂系统内部再生噪声的分析，为复杂管路系统低噪声的优化设计和布局提供理论支持。关键词：发

2、动机进气系统，消声器，气动性能，声学性能II上海交通大学工程硕士学位论文摘要AERODYNAMICANDACOUSTICPERFORMANCERESEARCHOFENGINEINTAKEMUFFLERABSTRACTWiththedevelopmentofdesigntechnologyonnavalvesselandshipcraft,requirementsaboutcompactionandlownoiseofthermalpowerplantbecomemoreandmorestrict,as

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6、erandoptimumdesignwaytodothelownoiseresearchofengineintakesystemincludingmuffler.Themainachievementsincludeasbellowed,1.Simulationmodelsofaerodynamicandacousticperformanceforintakemufflerhavebeensetupandacousticalperformanceofmufflerhasbeenanalyzedatbot

7、hstaticandsteadyflowconditions,aswellasaerodynamicperformancehasalsobeenanalyzed;2.Aerodynamic&acousticexperimenttestrigofmufflerandfourdifferentkindsofmufflers-expansionchambermuffler,micro-perforatedpipemuffler,interpolationperforatedmuffleranddissipa

8、tivemufflerhavebeensetupanddesigned,aswellasbothsimulationsandexperimentsforthesemufflersandinfluencingfactorsoftheirperformancehavebeencarriedout;3.Aerodynamic&acousticexperimenttestrigofpipesystemhasbeensetupaswellasbothsimulat