液滴降落过程表面曳力及其形状改变规律

The Surface Drag and Deformation of a Single Droplet Falling through Air

在单颗粒液滴-气流体系中,采用计算流体力学方法对速度发展段的输运现象进行数值模拟。研究液滴在气流中逆流运动的形态变化规律与局部传递特征。获得在30<Re<2000,0.01<Ac<1.52条件下,相间曳力系数随雷诺数的变化规律。

The transfer phenomena in the velocity developing period of single droplet air-flowing system has been numerically simulated by computation of fluid dynamics, and the deformation and local transfer characteristics of the drop moving through the countercurrent air-flowing studied. The relationship between drag coefficients and Reynolds numbers has been acquired at 30<Re<2000 & 0.01<Ac<1.52.