哈尔滨工程大学学报2012，Vol.33Issue(2)：185-191,7.DOI:10.3969/j.issn.1006-7043.201104067
预测消声器声学性能的时域非结构有限体积法
Unstructured finite volume time domain method for prediction of a muffier's acoustic attenuation performance
摘要
Abstract
In order to investigate the application of an unstructured finite volume time domain method in the prediction of acoustic attenuation characteristics of mufflers, a linear acoustic wave equation was solved using the finite volume method (FVM) on unstructured staggered-grids. Also, the stability condition was proposed based on dispersion analysis. An improved time domain impulse method based on absorbing a boundary condition was applied to predict the acoustic attenuation characteristics of mufflers. The presented method was used to calculate the transmission loss of an expansion chamber muffler with an extended inlet and outlet. Satisfactory agreement was achieved by the presented method, vibro-acoustic analysis software-SYSNOISE, and the experimental data, which demonstrates the accuracy of this method. The acoustic attenuation characteristics of the two types of complex steam mufflers were analyzed. Comparison with the SYSNOISE (FEM) results shows the ability of presented method on a large grid number.关键词
有限体积法/传递损失/消声器/非结构化网格/声学性能Key words
finite volume method/ transmission loss/ muffler/ unstructured grid/acoustie attenuation performance分类
数理科学引用本文复制引用
宣领宽,张文平,明平剑,龚京风,许万军..预测消声器声学性能的时域非结构有限体积法[J].哈尔滨工程大学学报,2012,33(2):185-191,7.基金项目
中央高校基本科研业务费专项资金资助项目(HEUCF100307). （HEUCF100307）
