基于STAR-CCM + 与Virtual.Lab 的围壳流激振动噪声仿真分析

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中图分类号：E925.66 文献标志码：B

Abstract：To solve the flow-induced vibration noise problem of the streamlined structures of the underwater vehicle's sail，computational fluid dynamics（CFD） and computational acoustics numerical method are employed，the distribution of flow field and the characteristic of flow-induced vibration noise are comprehensively analyzed. The hydrodynamic pressure fluctuation on the structure surface is used as the excitation to solve the acoustic vibration coupling of the structure with a acoustic coating. By comparing the flow-induced vibration noise before and after applying the acoustic coating on the underwater vehicle's sail，the influence of the acoustic coating material parameters on vibration noise is explored. It can provides a reference for vibration reduction in underwater vehicle.

Key words：acoustic coating；large eddy simulation （LES）； flow-induced vibration noise；acoustic vibration coupling；computational fluid dynamics （CFD）

0 引言

出的翼型结构，如舵、围壳、稳定翼等，这些翼型结构破坏了航行器本身的流场，导致结构发生振动，从而传递到水下航行器整体并向外辐射，产生流激振动水下航行器多为流线型结构，其表面有许多突噪声。（剩余7984字）