摘要
针对某抗性消声器消声量不足的问题,采用Virtual.Lab声学有限元AML自动匹配边界条件方法进行声学分析,得到消声器传递损失频域分布。利用数值分析方法模拟计算消声器内部流场,分析消声器消声效果和2次噪声产生原因。在控制一定压力损失的前提下,优化消声器内部结构,达到提高消声器消声性能的优化目标,为消声器声学性能和空气动力学性能研究提供一种可行的数值分析方法。
Aiming at the problem of insufficient noise reduction of a muffler, its acoustic performance is analyzed by means of the AML automatic matching layer method of Virtual. Lab acoustic finite element code, and the frequency domain distribution of the transmission loss of the muffler is obtained. The numerical method is applied to simulate the internal flow field of the muffler, the sound elimination effect of the muffler and the cause of the secondary noise are analyzed. Under the premise of controlling the certain pressure loss, the internal structure of the muffler is optimized, and the optimization goal of improving the muffler performance is achieved. A feasible numerical method is provided to improve the acoustic and aerodynamic performance of the muffler.
作者
谢旭
刘任权
赵红飞
何嘉洋
李春楠
XIE Xu;LIU Renquan;ZHAO Hongfei;HE Jiayang;LI Chunnan(School of Automotive Engineering, Wuhan University of Technology, Wuhan 430070, China;CATARC(Tianjin) Automotive Engineering and Research Institute Co., Ltd., Tianjin 300300, China;SATC-GM-Wuling Automotic Co., Ltd., Liuzhou 545000, Guangxi China)
出处
《噪声与振动控制》
CSCD
2019年第4期218-223,共6页
Noise and Vibration Control
关键词
声学
抗性消声器
有限元法
数值分析
传递损失
acoustics
resistance muffler
finite element method
numerical method
transmission loss
