噪声与振动控制2016，Vol.36Issue(5)：169-174,6.DOI:10.3969/j.issn.1006-1335.2016.05.035
尾气净化消声装置结构设计与性能分析
Structure Design and Performance Analysis of Exhaust Purification Silencers
摘要
Abstract
Considering the limitation in structure geometry and dimensions and the requirement of silence performance, noise attenuation, flow resistance loss and the velocity homogeneity in the end of the silencer, a new type of diesel engine exhaust purification silencers is designed. The acoustic finite element method and finite volume method are employed to calculate the transmission loss and internal flow field of the silencer. The influences of the length of chamber, the porosities of inlet and outlet tubes as well as the guiding annuluses on the acoustic attenuation and flow resistance characteristics are analyzed. Finally, the structure is optimized. The numerical results show that the optimized silencer can meet the requirement of noise attenuation, flow resistance loss and air-flow homogeneity in the silencer under different speed conditions.关键词
声学/尾气净化消声装置/结构设计/结构优化/性能分析Key words
acoustics/exhaust purification silencer/structure design/structure optimization/performance analysis分类
能源科技引用本文复制引用
苏英杰,季振林,黄虹溥..尾气净化消声装置结构设计与性能分析[J].噪声与振动控制,2016,36(5):169-174,6.基金项目
国家“863”高技术研究发展计划资助项目(2014AA041502) （2014AA041502）
