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使用不同的对流项离散方案和二阶湍流封闭模型对于高雷诺数下(106)方柱绕流的拖曳系数进行了计算,对于数值计算结果通过相互比较和经典的实验室结果进行了比较来分析不同离散方案和湍流封闭模型对于计算结果的影响,同时对于形状阻力和摩擦阻力对于拖曳系数分别的贡献进行了分析比较。本文的计算结果可以作为高雷诺数下类似问题的数值计算中对流项离散方案和湍流封闭模型的选择提供一个参考。
The drag coefficients of a (106) square cylinder under high Reynolds number were calculated using different convection term scheme and second-order turbulence model. The numerical results were compared with each other by comparison with the classical laboratory results The influences of different discrete schemes and turbulence closed models on the calculation results are also analyzed and compared respectively. The contributions of shape resistance and frictional resistance to the drag coefficient are also analyzed and compared. The results of this paper can be used as a reference for the discrete scheme of convection term and the choice of turbulent closed-loop model in numerical calculation of similar problems under high Reynolds number.