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建立同时考虑颗粒和颗粒之间瞬间碰撞作用(瞬间接触)和非流化下颗粒滑动和滚动运动产生的颗粒半接触作用的颗粒碰撞-摩擦应力模型。推导具有普适性的固相动量守恒方程,建立高颗粒浓度气固两相流动模型,对喷动床内气体颗粒流动过程进行了数值模拟。模拟计算预测喷动床内喷射区、环隙区和喷泉区颗粒流动特性。预测喷动床内颗粒浓度和速度分布与他人实验结果相吻合。
A particle collision-frictional stress model considering both the instantaneous collision between particles and particles (instantaneous contact) and the semi-contact of particles caused by particle sliding and rolling motion under non-fluidisation was established. The universal solid momentum conservation equation was deduced, and the gas-solid two-phase flow model with high particle concentration was established. The gas particle flow in the spouted bed was numerically simulated. Simulation Calculation Predict Particle Flow Characteristics in Spray Zone, Annulus Zone and Fountain Zone in Spout Bed. It is predicted that the particle concentration and velocity distribution in the spouted bed coincide with the experimental results of others.