对流项离散方案和湍流封闭模型对高雷诺数方柱绕流拖曳系数计算的影响

The influence of advection schemes and turbulence closure models on drag coefficient calculation around square cylinder at high Reynolds Number

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。

Different advection schemes and two-equation turbulence closure models are used to compute the drag coefficient around square cylinder at high Reynolds number（106）.The numerical results from these simulations are compared with each other and with classical experimental data in order to evaluate the effects of different combinations of advection scheme and two-equation turbulence model.The separate contribution from form drag and friction drag is also analyzed.The present work serves as a reference for future similar simulation.