[1]王磊,马建,杨志刚.基于壁面压力分布的消声器性能优化研究[J].郑州大学学报(工学版),2015,36(04):77-81.[doi:10.3969/j. issn.1671 -6833.2015.04.018]
　WANG Lei,MA Jiang,YANG Zhi-gang,et al.Study on Muffler Performance Optimization Based on Wall Pressure Distribution[J].Journal of Zhengzhou University (Engineering Science),2015,36(04):77-81.[doi:10.3969/j. issn.1671 -6833.2015.04.018]
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基于壁面压力分布的消声器性能优化研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
36
期数:
2015年04期
页码:
77-81
栏目:
出版日期:
2015-08-31

文章信息/Info

Title:
Study on Muffler Performance Optimization Based on Wall Pressure Distribution
作者:
王磊; 马建; 杨志刚
1.陕西汽车集团有限责任公司,陕西西安710200;2.长安大学汽车学院,陕西西安710064
Author(s):
WANG Lei1; 2; MA Jiang2; YANG Zhi-gang1; ZHANG Wen-bo1; LIU Yong-bo1
1.Shaanxi Automoblie Group CO. , Lad;Xi ’ an 710200，China;2.School of Automobile，Chang’an University，Xi ’ an710064，China
关键词:
穿孔类消声器; 数值模拟; 压力损失; 传递损失; 试验测试
Keywords:
perforated muffler; numerical simulation; pressure loss; transmission loss; experiment
分类号:
TH16TB535+.2TK411 +.6
DOI:
10.3969/j. issn.1671 -6833.2015.04.018
文献标志码:
A
摘要:
部分载货或牵引车辆由于底盘布置空间有限,需开发设计小型方箱消声器.基于理论及数值模拟逐步改进消声器内部结构,同时对改进的每种构型进行空气动力性能和声学性能的分析研究,获得其压力场、速度场、温度场,研究其阻力损失和噪声特性,探讨了结构因素对排气消声器性能的影响.逐步优化完成4种消声器构型,最终设计内插管接扩张孔管的小型方型消声器构型,利用排气管路的弯折和内插管的弯折进行排气的整体降速,内插管连接孔管,孔管直径越大,高速气体在其内部扩张降速越快，避免直吹壁面.改善消声器内部气流流动,避免气流对壁面冲击的应力集中.
Abstract:
Small square muffler need to be developed for laden or towing vehicles with limited chassis layoutspace. The internal structure of muffler is gradually modified based on theoretical and numerical simulations,and aerodynamic performance and acoustic performance of each modified configuration are analyzed and re-searched to obtain the corresponding pressure filed,velocity field and temperature filed,by which to investi-gate thoroughly the resistance losses and noise characteristics and explore the effects of structural factors on theperformance of exhaust muffler. Four configurations of muffler are progressively optimized and a small squareconfiguration with insert tube connecting perforated expansion tube is ultimately designed. By bending the gasexhaust pipe and insert tube to decelerate gas exhausting,the insert tube is connected with the perforatedtube. The greater the diameter of the perforated tube is,the rapider the expansion and deceleration of high-speed gas inside the tube will be, to avoid the direct blowing of gas against wall surface. The airflow inside themuffler is improved to prevent the impact stress of airflow against wall surface concentration.

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