泵喷推进器水动力噪声数值模拟方法研究现状

Research Status of Numerical Simulation Method for Hydrodynamic Noise of Pump-jet Propulsor

水动力噪声是泵喷推进器在较高航速时的主要噪声源,是评价潜艇隐蔽性能的一项重要指标。因此,预报分析泵喷水动力噪声具有重要意义。论文首先对已公开的泵喷推进器水动力性能研究方法进行归纳分析,得到各方法的特点和适用性。然后在流场分析的基础上阐述了泵喷声场常用研究模型。发现采用剪应力输运SST k-ω湍流模型计算流场,结合边界元法和扇声源模型对泵喷推进器声场进行预报,是较为成熟的水动力噪声数值模拟方法。

The hydrodynamic noise is the main noise source when pump-jet propulsor works in a relatively high speed,and is an important index to evaluate the hidden performance of submarines.Therefore,forecasting and analyzing pump water-jet noise is of great significance.In this paper,the published research methods of hydrodynamic performance of pump-jet propulsor are summa⁃rized,and the characteristics and applicability of each method are obtained.Then based on the flow field analysis,the commonly used research models on acoustic field are summarized.The results show that the shear flow transport SST k-ωturbulence model,combining the boundary element method with the fan sound source model are used to predict the sound field of the pump propeller well which is a relatively mature numerical simulation method for hydrodynamic noise.