摘要
采用SIMPLE算法结合RNGk-ε湍流模式计算了全附体潜艇DARPA Suboff潜艇的三维流场,并对流场模拟结果进行验证,在此基础上加载FW-H声学模型(The Ffowcs Williams and Hawkings Model)进行非定常计算,对潜艇流噪声声场进行模拟,计算了潜艇的自噪声和辐射噪声,验证了两种潜艇流噪声声场的特性。计算结果表明所采用的计算方法可以比较准确地模拟潜艇的流场和流噪声。
With the numerical method SIMPLE (Semi-Implicit Method for Pressure-Linked Equations) and the RNG k-ε two-equation turbulent model, the three-dimensional viscous flow field of a fully appendage submarine called DARPA Suboff is solved. Using the solution of the viscous flow field, the FW-H (The Ffowcs Williams and Hawings Model) acoustic model is added for simulation of unsteady flow-field and noise-field. The self-noise and the radiated noise are calculated. And also the characteristics of the flow noise around the submarine are analyzed. Based on these calculations and result validations, it can be concluded that the proposed method can simulate correctly the flow-field and the flow-noise.
出处
《振动与冲击》
EI
CSCD
北大核心
2008年第9期142-146,共5页
Journal of Vibration and Shock
基金
国家自然科学基金资助项目(10772119)
关键词
潜艇
流场模拟
流噪声
数值计算
submarine
flow field simulation
flow noise
numerical analysis
