水下高速航行器流噪声数值仿真与分析  

Numerical Simulation and Analysis of Flow Noise for Underwater High-Speed Vehicle

作　　者：叶鹏程[1] 潘光[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《西北工业大学学报》2014年第6期917-922,共6页Journal of Northwestern Polytechnical University

基　　金：国家自然科学基金(51279165)资助

摘　　要：运用计算流体力学方法仿真计算不同头型、不同航速航行器流噪声,得到流噪声分布及随航速变化规律。通过对比分析数值仿真结果发现,航行器流噪声随航速的增加而平稳增大。在相同条件下,平头航行器流噪声总声压级略高于圆头航行器。为了更好预测高航速条件下航行器流噪声,对空化区流噪声进行了初步探索。The flow noise of underwater vehicle as the main self-noise source, which disturbs the normal working of sonar is especially serious during natural cavitation.Computational fluid dynamics （ CFD） is used to calculate flow noise of vehicle with different head shapes and velocities.The distribution and rule of flow noise are obtained for va-rious velocities.It is found that the flow noise of vehicle increases steadily with increasing velocity through the com-parison and analysis of numerical simulation results.Under the same conditions, the flow noise of flat-head vehicle is a little larger than round-head.For the sake of predicting the flow noise of high-speed vehicle, the flow noise across cavitation regions is researched preliminarily in this paper.

关 键 词：水下航行器 流噪声 空化 

分 类 号：O357[理学—流体力学]