高铁空调管道消声段的仿真优化.pdf

第34卷第S1期 2014年12月噪声与振动控制 NoISE A,TD VIBRArIoN CoNTRoL vol 34 文章编号:(2014)S1-0071—04 高铁空调同t大j三Jj『司管道消声段的仿真优化吴宏,鲁帆,欧阳山,隋富生(中国科学院声学研究所噪声与振动重点实验室,北京100190) 摘要:对高铁空调管道消声段进行了仿真分析,得到原厂消声段的传递损失,与实验数据进行比较,验证了仿真结果的可靠性;进而对消声段进行流场分析,得到消声段内壁在风力作用下振动所产生的噪声云图。仿真分析后,进一步对消声段进行优化设计。在保证空调通风量的前提下,通过改变消声段内的挡板间距、挡板间角度等参数建立不同的声腔模型,并比较各模型的仿真结果;同时对比了内饰材料为玻璃棉的消声段模型与内饰材料为韩国棉的消声段模型的传递损失对比结果,最后提出优化方案。关键词:声学;管道消声;仿真分析;消声器中图分类号: 文献标识码:A Simulating Optimization oftheSound Eliminator forHigh--speed RailAirConditioner Duct 多阿Hong,LU Fan,OUYANG Shan,SUI Fu-sheng (Key Laboratory ofNoise andVibration Research,Institute ofAcoustics, Chinese Academy ofSciences,Beijing 0090,China) Abstract:Simulation analysis ofthesound eliminator fortheHigh-Speed Rail airconditioner duct processed,the transmission ofthesound eliminator got,and pared with theexperimental data,it shows thatthesimula— tion analysis theflow fieldanalysis ofthesound eliminator processed,the sound pressure field of the sound eliminator the simulation analysis,the optimization ofthe sound eliminatorprocessed,by chang- ingthe distanceand theangle between thebaffle,several acoustic FE models established,then thesimulation analysis pared;at thesame transmission lossofthesound eliminator with glass wooland谢也polyurethane cot- ton alsoobtained,finally the bestoptimization scheme put forward. Key