船用机电设备流动噪声的数值仿真方法

Numerical methods for predicting flow-induced noise of marine mechanical devices

归纳总结了现有的常用声学数值仿真方法,回顾了基本的流体动力声学理论和计算方法,重点分析了流动噪声声学类比方法。针对船用机电设备的流动噪声预估问题,在以往相关工作的基础上,探讨了从流场计算到声类比模拟,再到声场数值仿真计算的技术途径,着重讨论了计算流体力学(CFD)的结果和声场计算的衔接关系。为解决复杂的船用机电设备流动噪声问题提供了参考。

This article summarizes the general acoustic simulation methods,and provides a review about the theories and computational methods of the flow-induced noise,especially about acoustic analogical methods.Based on some relevant work,it discusses the methods from Computational Fluid Dynamics(CFD) to acoustic analogy,and to general acoustic simulation.The relationship between the results of CFD and acoustic simulation is studied.At last,some future work is shown to deal with the noise problem of marine mechanical devices.