Experiment and CFD Analysis of Reactive Muffler

作者：Yunshi Yao, Shaodong Wei, Jinpeng Zhao, Shibin Chen, Zhongxu Feng, Jinxi Yue · 发表于：Research Journal of Applied Sciences Engineering and Technology · 年份：2013 · DOI：10.19026/rjaset.6.3636 · 被引用次数：15 · 研究领域：Aerodynamics and Fluid Dynamics Research、Acoustic Wave Phenomena Research、Fluid Dynamics and Vibration Analysis

A conventional muffler used in vibratory rollers is usually designed based on experience and its performance could be enhanced in a large degree through structure optimization. In order to evaluate performance of reactive muffler and its effect on power loss of engine, flow field of muffler was discussed by CFD comparing with experimental test and the structure of reactive muffler was optimized. Based on results of simulation and optimization, the reactive muffler used in vibratory rollers with weight of 13t was fabricated and its field test was carried on. The simulate results showed that velocity field coincided with the pressure field basically, which indicates that the optimized muffler -2# has excellent aerodynamic characteristics and rational design of damping units. The results of field tests showed that 2# muffler had better acoustic insertion loss with little pressure loss. Acoustic insertion loss was 17~18.4 dB (A) at engine speed of 2450 rpm, which meets the designing goal.