中国舰船研究2017，Vol.12Issue(6)：22-29,8.DOI:10.3969/j.issn.1673-3185.2017.06.004
水面舰船粘性流场和流噪声的数值计算
Numerical simulation of viscous flow and hydrodynamic noise in surface ship
摘要
Abstract
[Objectives]The problem of noise caused by an unsteady flow field around a surface ship is a difficulty facing the stealth design of ship hulls,in which the existence of the free surface makes it different from submarine hydrodynamic noise calculation. To solve this problem,[Methods]the Volume of Fluid(VOF)method and SST k-ωturbulence model are combined to simulate the unsteady flow field of the hull,and the free surface is given an air acoustic impedance to simulate the absorption boundary. The pulsating pressure of the hull surface is used as the source of the noise,and the underwater radiation noise of the surface ship is calculated with the acoustic finite element method.[Results]The results show high agreement with the experimental results and previous simulation results. The noise sources are mainly concentrated at the bow of the hull. [Conclusions] The results show that this calculation method can accurately simulate the flow field and sound field of a surface ship,and it can provides valuable reference for the acoustic stealth design of surface ships.关键词
流—声耦合/流噪声/Wigley船型/流体体积法/SSTk-ωKey words
fluid-acoustic coupling/hydrodynamic noise/Wigley hull/Volume of Fluid (VOF) method/SST k-ω分类
交通工程引用本文复制引用
于汉,李清,杨德庆..水面舰船粘性流场和流噪声的数值计算[J].中国舰船研究,2017,12(6):22-29,8.基金项目
国家自然科学基金资助项目(51479115) （51479115）
