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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。
Aiming at the variation of density and particle concentration in two-phase flow, a modified equation of particle phase pressure taking into account the variation of particle phase concentration and a correction equation of fluid phase pressure considering the influence of compressibility are established. In the calculation of incompressible two-phase flow, a method of calculating the pressure-two-phase flow has been developed. The covariance component of velocity is used to solve the variable. The incompressible two-phase dense flow and the compressible dilute two-phase flow are calculated. Compared with the existing experimental data and relevant literature, the agreement is good, indicating that the calculation Method is feasible.