摘要
以潜艇模型SUBOFF为研究对象,采用大涡模拟(LES)方法求解了流动的非定常解.通过与试验值、以及采用RNGk-ε湍流模型得到的定常结果的比较,验证了LES方法的有效性.将LES方法运用于流动噪声的数值计算,探讨了时间步长对计算结果的影响,在定性研究的基础上获得了一些流动噪声的基本性质.
Numerical simulation of the three-dimensional unsteady viscous flow field around the SUBOFF submarine model with some appendages was resolved with RANS equations and large eddy simulation （LES） method. The validity of LES method was verified by comparison of its results and some experimental data, and some steady results with RNG k-ε two-equation turbulence model. And the LES method was applied to the flow noise calculation. The effect of time step size on computational results was researched. Some qualitative characteristics of flow noise were derived.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2009年第8期1307-1311,1316,共6页
Journal of Shanghai Jiaotong University
关键词
流动噪声
大涡模拟
数值模拟
flow noise
large eddy simulation （LES）
numerical simulation
