大曲率弯道和叶栅内的湍流数值模拟

本文在贴体曲线坐标系下应用非交错网格技术，发展了适于求解复杂流动的压力修正算法，采用速度的协变物理分量为动量方程的求解变量，推导得出一个适于任何曲线坐标系下控制单元体界面流通量的插值模式，可以有效地抑制不合理的波动压力场，计算表明，算法稳定收敛，计算值与试验值吻合良好，同时能预示通道内复杂的流动现象。

Numerical Simulation of Turbulent Flow in Curved Duct and Cascade Passage With Strong Curvature

Using the technique of non-staggered grid, a pressure corrected algorithm(SIMPLEC) for a general curvilinear system is developed in this paper to simulate complex flows-Selecting the velocity components along axes of curyilinear coordinates as solving variables in the differential momentum equations, a specific scheme, which can suppress the unreasonable pressure oscillations,is developed for getting the interpolation of flux through the surface of control volume. Computation testing shows that the algorithm convergence is steady and quick. The numerical results are in teasonably agreement with the available experimental data. And it can also predict complex flow phenomena.