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以液-固两相流理论为基础,以水和玻璃颗粒体系为研究对象,采用欧拉-欧拉模型对环隙处于流化态与非流化态时的导向管喷动流化床的流化行为进行了数值模拟。动量与质量守恒方程通过有限体积法分别计算。通过曳力,湍流颗粒波动时候的能量耗散进行耦合,包括颗粒与颗粒之间的磨擦作用。对环隙区流化液速度大于(与小于)最小流化液速度时的床层情况进行分析研究,并对比了这两种条件下,粒径、导向管安装高度和填充高度对颗粒质量循环速率的影响。
Based on the theory of liquid-solid two-phase flow and the water and glass particles system, the Euler-Euler model was used to spout the fluidized bed with fluidized and non-fluidized annulus Fluidization behavior was numerically simulated. Momentum and mass conservation equations are calculated by the finite volume method. Through the drag force, the energy dissipation of the turbulent particles fluctuates during coupling, including the friction between the particles and the particles. The situation of the bed when the velocity of the fluid in the annulus zone is greater than (and less than) the minimum fluid velocity is analyzed and compared. The comparison of the particle size, the installation height of the guide tube and the filling height on the particle mass circulation Effect of rate.