抗性消声器内部流场对传递损失的影响研究  

Study on the Influence of Internal Flow Field of Resistance Muffler on Transmission Loss

作　　者：唐焱[1] 赵立铭 孙银银 梁才航[1] TANG Yan;ZHAO Li-ming;SUN Yin-yin;LIANG Cai-hang(School of Mechanical and Electrical Engineering,Guilin University of Electronic Technology,Guangxi Guilin 541004,China)

机构地区：[1]桂林电子科技大学机电工程学院,广西桂林541004

出　　处：《机械设计与制造》2022年第2期143-147,共5页Machinery Design & Manufacture

基　　金：国家自然科学基金—太阳能驱动的中空纤维膜液体除湿系统的热力学研究(51566002)。

摘　　要：柴油客车需求量剧增导致市区噪声等级提升,高性能配套消声器是抑制此类声源的有效措施之一。运用流体力学原理和声学有限元法,进行数值仿真试验能降低设计成本,缩短研发周期。首先在UG环境建立目标消声器三维模型,导入ANAYS ICEM CFD网格划分平台作网格划分;其次将验证的消声器网格模型导入ANSYS Fluent环境,量化研究腔内流速、压力、温度场分布,获得不同边界的压力损失;最后建立消声器传递导纳模型,将流场网格数据导入Virtual Lab.Acoustions,完成传递损失相关计算。结果表明,基于提高降噪效率的流场分析计算可实现多目标结构优化。The surge in demand for diesel passenger cars has led to an increase of noise levels in urban areas,and high-performance matching mufflers are one of the effective measures to suppress such sound sources. Based on the principles of fluid mechanics and acoustic finite element method,numerical simulation experiments can reduce design costs and shorten the development cycle. In this work,Firstly,the 3 D model of the target muffler is built in the UG environment,and the ANAYS ICEM CFD meshing platform is introduced for mesh division. Secondly,the verified muffler mesh model is introduced into the ANSYS Fluent environment to quantify the flow velocity,pressure,and temperature field distribution in the cavity. The pressure loss of the boundary is obtained. Finally,the muffler transfer admittance model is established,and the flow field mesh data is imported into Virtual Lab to complete the transfer loss correlation calculation. The results show that the multi-objective structure optimization can be realized by the flow field analysis.

关 键 词：抗性消声器 CFD 流场分析 结构优化 

分 类 号：TH16[机械工程—机械制造及自动化] U463.99[机械工程—车辆工程]