气固两相流k-ε-kp-εp双流体模型及应用

A k ε k p ε p TURBULENCE MODEL FOR GAS-SOLID TWO-PHASE FLOWS AND ITS APPLICATION

以流体ｋ－ε双方程模型为基础，提出了一种包括颗粒湍动能输运方程和耗散率方程的ｋ－ε－ｋｐ－εｐ两相湍流模型。并对两个垂直上升管道内气固两相湍流进行了数值计算，计算结果和已有实验结果吻合得很好。

Based on k ε two equation turbulence model of gaseous phase,the k ε k p ε p two phase turbulence model is presented,which includes the turbulent kinematic energy equation of particulate phase and the dissipation rate equation of that energy.The numerical computations are made for the turbulent gas solid two phase flows in two vertical straight channels.The mean velocities and turbulence intensities of gaseous phase and particulate phase,which are predicted with the presented turbulence model,are in good agreement with the experimental results.And it is concluded,that the turbulence intensity of particulate phase is often greater than that of gaseous phase.This conclusion is consistent with available LDV experimental results.Since the algebraic model of particles has no ability to describe the characteristics,the presented turbulence model is very successful in predicting the flow characteristics of turbulent gas solid two phase flows.