稀薄气固两相流的数值分析

Numerical Analysis of Dilute Gas-Solid Two Phase Flows

本文用拉格朗日方法对稀薄气固两相流进行了数值分析,着重讨论有颗粒存在时,颗粒对气流速度分布的影响。计算的实例与实验结果比较,有着很好的吻合。

The numerical analysis based on Lagrangian approach for dilute gas-solid two phase flows is presented in this paper. The gas phase is treated by using the Simplec algorithm of the two-equation (k-ε) turbulence model. In the momentum equations, two-way coupling between phases is considered and the PSI model proposed by Crow is used to determine the source terms due to the effect of the solid par- ticles on the gas phase. In order to obtain a convergent solution, the source terms are imputed in batches, Three numerical examples show that the predictions based on the present method are in good agreement with available experimental data.