论文部分内容阅读
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) is applied to the calculation of internal acoustic problems, and the transmission loss of the muffler is predicted, and compared with the traditional boundary element method (CBEM), the correctness of the developed FMBEM is verified. The influence of unit number and frequency on the computational and memory requirements of FMBEM and CBEM in predicting the acoustic performance of the muffler shows that the developed FMBEM is efficient in predicting the acoustic performance of a large number of unit mufflers relative to CBEM. The frequency The calculation of FMBEM and memory requirements have a significant impact.