Analysis of high-duty dual exhaust silencer system based on acoustic field and flow field

Jianghui Xin; Yuanyuan Zhang; Pan Zhou; Liguo Zang

doi:10.1117/12.2652302

10 November 2022 Analysis of high-duty dual exhaust silencer system based on acoustic field and flow field

Jianghui Xin, Yuanyuan Zhang, Pan Zhou, Liguo Zang

Proceedings Volume 12331, International Conference on Mechanisms and Robotics (ICMAR 2022); 1233103 (2022) https://doi.org/10.1117/12.2652302
Event: International Conference on Mechanisms and Robotics (ICMAR 2022), 2022, Zhuhai, China

Abstract

In order to solve the noise pollution problem of off-road vehicle in the city, a high-duty dual exhaust silencer system was designed to reduce exhaust noise. Considering the flow characteristics of air and the nature of vibration, one front silencer and two rear silencers were adopted for exhaust system. The resistance silencer is used as front silencer to eliminate the high frequency noise while reactive silencer as rear silencer to eliminate the low frequency noise. Acoustics and hydrodynamics analyses of exhaust system were carried out based on Sysnoise combined with Fluent to obtain transmission loss, velocity, turbulent energy, pressure loss and so on. Based on these information, the acoustic and aerodynamic properties of the silencer are analyzed and evaluated. The analysis results show that the insert-pipe structure can broaden frequency bandwidth of noise reduction, and the silencer performance of different silencer units can be superposition after series.

Citation Download Citation

Jianghui Xin, Yuanyuan Zhang, Pan Zhou, and Liguo Zang "Analysis of high-duty dual exhaust silencer system based on acoustic field and flow field", Proc. SPIE 12331, International Conference on Mechanisms and Robotics (ICMAR 2022), 1233103 (10 November 2022); https://doi.org/10.1117/12.2652302

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