用同位网格算法实现三维方形开口流的数值模拟

The SIMPLER algorithm based on the collocated grid simulation for 3-D square opening cavity flow

为了能够真实模拟固体壁面对流场的影响,采用储存量小、计算速度快的同位网格SIM-PLER算法对三维方形开口流进行了数值模拟.数值结果表明,平行于来流方向,不同截面内速度、压强、流线等受固体壁面影响各不相同;雷诺数不同时,主流束附近中轴速度v变化剧烈.

In order to simulate the influence of the solid-wall on the field, the SIMPLER algorithm based on the collocated grid is used to simulate 3-D partial opening cavity flow in this paper. The numerical results show that the influence of the solid-wall on the velocity, pressure and the flow line of different section is different. The Mid-axis velocity near the mainstream beam changes dramaticly when the Reynolds number increases.