计算两相流的一种改进方法

针对两相流动中密度及颗粒浓度的变化，建立了一种考虑颗粒相体积浓度值变化的颗粒相压力修正方程及考虑可压缩性影响的流体相压力修正方程，在不可压两相流的计算方法上，发展了一种计算可压两相流的方法，以速度协变分量为求解变量，对不可压两相密相流及可压稀相两相流进行了计算，并和已有的实验数据及有关文献进行了比较，吻合性较好，表明计算方法可行。

Improved method of two-phase flow simulation

The pressure correction equations of particle kinetic pressure and fluid pressure were established in which correction of particle volumetric fraction and fluid density was considered. A algorithm on compressible two phase turbulent flow was developed. Velocity covariant was adopted, numerical computation for dense incompressible two phase and dilute compressible two phase were performed. It is showed that the calculations agree well with the experimental data, and the simulation method is performable.