固液两相流中的K－ε双方程湍流模式

A K-εTwo-Equation Turbulence Model for the Solid-Liquid Two-Phase Flow

建立了固液两相流中更一般的Ｋ－ε双方程湍流模式．模化了固相和液相的连续方程、动量方程及Ｋ方程和ε方程．该湍流模型考虑了固液两相间速度的滑移，颗粒间的作用及相间作用．使用本文所建立的湍流模型，数值预测了一管湍流中的沙水混合流动，其预测结果与实验结果比较一致．

A two-equation turbulence model has been developed for predicting two-phase flow. The two equations describe the conservation of turbulence kinetic energy and dissipation rate of that energy for the incompressible carrier fluid in a two-phase flow. The continuity, the momentum, K and ε equations are modeled. In this model,the solid-liquid slip velocities, the particle-particle interactions and the interactions between two phases are considered. The sandy water pipe turbulent flows are successfully predicted by this turbulence model.