翼型突体三维绕流场的数值模拟计算

采用雷诺平均NS方程为基本方程 ,应用二层k-ε湍流模型封闭雷诺平均NS方程 ,并用有限体积法离散方程 ,对翼型突体的三维绕流场进行了数值模拟计算 .不同于通常的网格划分 ,采用了贴体坐标与空度法相结合的方法对翼型突体的几何形状及其对流场的影响进行描述 .计算结果与实验结果进行了比较 ,结果表明 ,所用方法 ,可以对翼型突体三维绕流场给出合理的描述 .

Numerical simulation of three-dimensional flow field of a wing-body junction

The three dimensional flow field of a wing body junction is numerically simulated by using Reynold's average NS equation, two layer k ε turbulent model and finite volume method. Along with body fitted coordinate, the porosity method is used to describe the three dimensional geometrical shape of the wing body junction, which is different from general grid making method. The numerical results have been compared with the experimental results. The comparison shows a good agreement between numerical results and experimental ones.