采用与研究单相空气的单圆球绕流类似的方法以及基于有限体积法,对气液两相绕流单圆球的问题进行了数值模拟,并与单相流空气的绕流进行了对比分析。结果发现:液相的加入减缓了中心线上的流向速度的恢复,增强了颗粒尾涡效应,并且湍动能增量随着液含率的增加而增加。
By using the method similar to the single-phase air flow around the single ball and on the base of finite volume,gas-liquid two-phase flow around single ball is numerically simulated,and compared with the single-phase air flow around the single ball.The results show that the addition of liquid can slow down the recover velocity on the central line and enhances the ball trailing vortex effect,and the magnitude of turbulence enhancement increases with the growth of the liquid void fraction.