›› 2014, Vol. 34 ›› Issue (3): 207-210.DOI: 10.3969/j.issn.1006-1335.2014.03.044

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Study on Sound Elimination Behavior and Airflow Noise of Plug-in Silencers

  

  • Received:2013-07-31 Revised:2013-10-11 Online:2014-06-18 Published:2014-06-18

插入式消声器消声性能及气流噪声的研究

王豪,戴永强, 谢荣,钱征兵   

  1. ( 马勒技术投资(中国)有限公司,  上海  201401 )
  • 通讯作者: 王豪

Abstract:

Acoustic damping is calculated for inserted tube resonator and validates this resonator on the roller dyno. Shearing noise source under high air flow speed is simulated based large eddy simulation. A new design concept is proposed in order to reduce the aero-acoustic noise source intensity.

摘要:

在整车轮毂上面测量了涡轮增压发动机的进气口噪声。为了降低该噪声,设计了插入式消声器并计算了其消声效果,并在整车轮毂上面验证了该消声器的效果。在包含背景气流的声传递损失台架上面测量并且重现了在发动机上所表现出来的气动噪声。采用大涡模拟的方法计算了具有试验结果的后深腔结构的气动噪声,也模拟了该插入式消声器在高速气流下所产生的噪声,并优化了设计以降低气动噪声源的强度。

关键词: 声学, 消声器, 大涡模拟, 气流噪声

CLC Number: