哈尔滨工程大学学报2017，Vol.38Issue(8)：1247-1253,7.DOI:10.11990/jheu.201606040
穿孔消声器声学计算的快速多极混体边界元法
Acoustic computation of perforated silencers by fast multi-pole mixed-body boundary element method
摘要
Abstract
To improve computation efficiency and extend the computation frequency range, the mixed-body boundary element method (MBEM) was combined with the fast multi-pole algorithm to evaluate the acoustic attenuation performance of perforated silencers.The correction of fast MBEM was validated by comparing the measuring result of transmission loss with the computation result of traditional MBEM.The fast multi-pole mixed-body boundary element method (FMMBEM) may efficiently save computational time for large-scale acoustic problems without affecting accuracy.The FMMBEM was then employed to predict the transmission loss of perforated silencers.Predicted results showed that the locations of inlet and outlet tubes may affect the acoustic attenuation characteristics of the two-pass perforated tube silencer at higher frequencies, while the perforation on bulkhead(s) may improve the acoustic attenuation performance of three-pass perforated tube silencer in the middle frequency range.关键词
穿孔消声器/传递损失/混体边界元方法/快速多极算法/计算效率Key words
perforated silencer/transmission loss/mixed body boundary element method/fast multi pole algorithm/computation efficiency分类
通用工业技术引用本文复制引用
杨亮,季振林..穿孔消声器声学计算的快速多极混体边界元法[J].哈尔滨工程大学学报,2017,38(8):1247-1253,7.基金项目
国家自然科学基金项目(11174065). （11174065）
