摘要
抗性消声器的声学性能与空气动力学性能互相制约,为了提高抗性消声器的空气动力学性能,采用CFD法对添加了分流管的单腔体及多腔体扩张式消声器进行阻力损失分析。对比不同结构因素对阻力损失和传递损失的影响,结果表明:气体在扩张腔中分流可以起到降低阻力损失的作用;对于分流管单腔体消声器空气动力性有所提升但声学性能有所降低;对于分流管双腔体消声器空气动力性和声学性能均有所提升。此外采用CFD+Virtual.Lab联合仿真方法对各个结构的偶极子气动噪声进行分析,结果表明消声器复杂的内部结构在提升空气动力性的同时会增大气动噪声。
The acoustic performance and aerodynamic performance of the resistant muffler are mutually restricted.In order to improve the aerodynamic performance of the resistant muffler,the CFD method is used to analyze the resistance loss of the single-cavity and multi-cavity expansion muffler with the shunt pipe.Compare the influence of different structural factors on resistance loss and transmission loss.The results show that:the gas shunting in the expansion cavity can reduce the resistance loss;the aerodynamic performance of the shunt single-chamber muffler is improved,but the acoustic performance is reduced;The aerodynamic and acoustic performance of the shunt double-chamber muffler is improved.In addition,the CFD+Virtual.Lab co-simulation method is used to analyze the dipole aerodynamic noise of each structure.The results show that the complex internal structure of muffler can improve the aerodynamic performance and increase aerodynamic noise.
作者
刘智建
张杰
姚新改
郭文亮
LIU Zhi-jian;ZHANG Jie;YAO Xin-gai;GUO Wen-liang(College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan,Shanxi 030024;Shanxi Key Laboratory of Manufacturing,Taiyuan,Shanxi 030024)
出处
《液压与气动》
北大核心
2020年第12期108-113,共6页
Chinese Hydraulics & Pneumatics
基金
山西省应用基础研究项目(201701D121074)。
作者简介
刘智建(1995—),男,新疆阿克苏人,硕士研究生,主要从事流体机械振动及噪声控制方面的研究。
