Study on Muffler Performance Optimization Based on Wall Pressure Distribution
[1]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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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
36卷
Number of periods:
2015 04
Page number:
77-81
Column:
Public date:
2015-08-31
- Title:
- Study on Muffler Performance Optimization Based on Wall Pressure Distribution
- CLC:
- TH16TB535+.2TK411 +.6
- DOI:
- 10.3969/j. issn.1671 -6833.2015.04.018
- 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.
- References:
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