垂直管内气固两相流数值模拟计算——颗粒动力学理论方法

COMPUTATIONAL MODELING OF GAS PARTICLE FLOW IN A VERTICAL RISER ——KINETIC THEORY APPROACH OF GRANULAR FLOW

基于气固两相流体动力学模型、颗粒动力学理论的颗粒脉动动能模型（ＫＴＧＦ）和气体湍流动能模型（ＳＧＳ），对气固两相垂直上升流动进行数值计算，模拟计算结果得到了与试验研究所揭示的环—核流动结构。模拟计算与Ｍｉｌｌｅｒ和Ｇｉｄａｓｐｏｗ （１９９２）试验结果进行了比较，颗粒相浓度。

Solid velocity,particle concentration and solid viscosity are computed in a vertical riser using a two phase computational fluid dynamic model combination with the solid turbulence kinetic energy model based on the kinetic theory of granular flow(KTGF) and SGS(Subgrid scale)turbulence model for gas phase.The model predicts a core annular flow structure in a riser,similar to that found experimentally.The time averaged model predictions agree well with the experimental data of Miller and Gidaspow(1992).