二维圆柱绕流数值模拟

The Numerical Simulation of Two Dimensional Circular Flow

对于椭球体绕流问题，可以考虑利用二维切片法的思想将其剖成一个个圆剖面，研究圆剖面的二维流动问题即二维圆柱绕流问题。采用Fluent软件，分别用多种流动模型在高雷诺数下对定常和非定常状态的圆柱绕流进行了数值模拟，计算得到圆柱绕流的升阻力系数、分离点位置、Strouhal数、流函数等结果，并与文献中的实验结果进行了比较，得到相应比较合理的计算模型。

For the flowing of submarine at high attack angle, two demensional strip method is applied to study the problem.Uniform flow around a mounting cylinder is simulated with FLUENT software, and lift coefficient,drag coefficient,separation angle,Strouhal number, stream function are obtained.The present results are compared with the experimental results in literature[1] to determine the more reasonalble numerical method.