噪声与振动控制2018，Vol.38Issue(3)：177-180,4.DOI:10.3969/j.issn.1006-1355.2018.03.034
管口声辐射特性在消声器出口端应用的研究
Research on Acoustic Radiation Characteristics of Nozzles at Outlets of Mufflers
摘要
Abstract
Sound transmission through the pipe to the nozzle has a reflection behavior, which can be applied to the outlet to improve the sound elimination performance of the muffler. In this paper, the acoustic impedance at the orifice of the muffler is calculated and used as the boundary condition at the outlet to evaluate the sound elimination performance of the outlet by means of the Virtual. Lab Acoustics software. Result of calculation shows that for the same flow area, using more outlet pipes and smaller diameter of the pipes can aggravate the reflection effect and improve the performance of noise reduction of the muffler. A series of experiments is carried out to confirm the result. This research has a reference value for the design of muffler outlets.关键词
声学/噪声控制/消声器/管口声辐射/声压反射Key words
acoustics/noise control/muffler/nozzle acoustic radiation/acoustic pressure reflection分类
建筑与水利引用本文复制引用
黄加晟,赵晓丹,孙黎明,王志鹏..管口声辐射特性在消声器出口端应用的研究[J].噪声与振动控制,2018,38(3):177-180,4.基金项目
拖拉机动力系统国家重点实验室开放基金资助项目(SKT2016013) （SKT2016013）
江苏省高校优势学科建设工程资助项目(PAPD) （PAPD）
