数字海洋与水下攻防2024，Vol.7Issue(3)：253-259,7.DOI:10.19838/j.issn.2096-5753.2024.03.002
基于CFD的TBL脉动压力水下航行器流激噪声计算
Flow-induced Noise Calculation of Underwater Vehicles Based on CFD and Turbulent Boundary Layer Pulsating Pressure
摘要
Abstract
The hydrodynamic noise of underwater vehicles during high-speed navigation has always been particularly prominent.Hydrodynamic noise is divided into direct radiation noise of fluid pulsating pressure and flow-induced noise.Flow-induced noise is generated by structural vibration caused by turbulent pulsating pressure on the structural surface.Due to the randomness of turbulent disturbances,the surface pulsating pressure is not uniform in time and space,so the statistical analysis method is needed to calculate flow-induced noise.The calculation methods for turbulent boundary layer pulsating pressure mainly include traditional semi-empirical formula calculation and CFD flow field analysis calculation.Flow-induced noise calculation uses method combined with these two,extracting the parameters required for the frequency wavenumber spectrum prediction model in flow field simulation,and respectively using the finite element method and statistical energy method for calculation.The results are compared with those obtained from theoretical empirical formula methods,and the noise results of the two are quite consistent.关键词
流激噪声/脉动压力/湍流边界层Key words
flow-induced noise/fluid pulsating pressure/turbulent boundary layer分类
通用工业技术引用本文复制引用
陈涵,王子樊,刘吉明,刘小侠,方智..基于CFD的TBL脉动压力水下航行器流激噪声计算[J].数字海洋与水下攻防,2024,7(3):253-259,7.基金项目
国家自然科学基金面上项目"静水压下覆盖多相材料声学层的圆柱壳声辐射性能研究"(52371318). （52371318）
