摘要
将快速多极边界元法(FMBEM)应用于计算内部声学问题,预测了消声器的传递损失,并与传统边界元法(CBEM)作了比较,验证了所发展FMBEM的正确性.分析和比较了在预测消声器声学性能时单元数和频率对FMBEM和CBEM的计算量和内存需求量的影响规律,结果表明:相对于CBEM,所发展的FMBEM在预测大量单元数消声器声学性能时是高效的;频率对FMBEM的计算量和内存需求量有着重要的影响.
The fast multipole boundary element method （FMBEM） was applied to calculate the interior acoustic problems. The transmission loss results of silencers were compared with predictions of the conventional boundary element method （CBEM）, which show that the proposed FMBEM is valid. Influence rules of the number of elements and frequency on the computational complexity and the memory requirements of FMBEM and CBEM were analyzed and compared. The results showed that the FMBEM is more efficient for predicting the acoustic performance of silencers with large numbers of elements compared to the CBEM, and frequency has some important influence on its computational complexity and memory requirements.
基金
Supported by the NNSF of China(No.10474016).
关键词
快速多极边界元法
声学性能
消声器
fast multipole boundary element method （FMBEM）
acoustic performance
silencer
