摘要
本文提出了将边界元法与四负载法相结合用于预测排气消声器插入损失的新方法，建立了具有低马赫数流时消声器四极参数求值的边界元计算方法，并将四负载法扩展到排气消声系统声源阻抗的求值。文中对两个消声器的插入损失进行了数值计算和实验测量，其预测结果与实测结果吻合良好。
A new method is presented for predicting the insertion loss of an exhaust mufflerby combination of the boundary element method with the four-load method, and a boundaryelement scheme is proposed to calculate four-pole parameters of a muffler with low Mach numberflow, and the four-load method is extended to evaluate the acoustical source impedance of theexhaust system. The insertion loss of two mufflers was studied, and the predicted results were ingood agreement with the measured ones.
出处
《声学学报》
EI
CSCD
北大核心
1996年第2期116-122,共7页
Acta Acustica
基金
黑龙江省自然科学基金
