潜艇主艇体三维粘性流场数值计算方法研究

Method of Numerical Calculation of the 3D Viscous Flow Field over a Submarine Main Hull

采用不同的湍流模型、边界条件对SUBOFF模型主艇体的七种网格模型进行了三维粘性流场数值模拟。将计算所得的艇体表面的压力系数和壁面剪应力系数沿艇长的分布与有关文献的试验结果进行了比较,并以曲线的形式展现出来。分析了湍流模型、边界条件和y+值范围对潜艇主艇体三维粘性流场数值计算结果的影响。

Numerical calculations of the 3D viscous flow over a main hull of SUBOFF for seven grid models are made by solving RANS equations with different viscous models and boundary conditions. The comparison of the computing results with the test data from some references is presented in the form of curves of pressure coefficient and wall shear stress coefficient. According to the curves, the effect of viscous models, boundary conditions and range of y＋ on the result of numerical calculation is analyzed.