喷动床内气固两相流体动力行为的数值模拟  

NUMERICAL SIMULATION OF HYDRODYNAMIC BEHAVIOR IN SPOUTED BEDS

作　　者：何玉荣[1] 陆慧林[1] 刘文铁[1] 赵云华[1] 王强[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《化工学报》2004年第2期290-296,共7页CIESC Journal

基　　金：国家自然科学基金资助项目 (No 5 0 3 760 13 )~~

摘　　要：The gas-solids flow behavior was predicted by means of a hydrodynamic model of dense gas-solid flow in spouted beds. Constitutive equations describing the particle interactions and friction of particles and viscosity were incorporated into a hydrodynamic simulation computer program. The effect of operating conditions (inverted cone inclination and gas spouting velocity) on particle velocity and concentration in the three zones of spouted beds: spout, annulus and fountain were numerically studied. Both vertical and horizontal particle velocities increased with increasing spouting gas velocity in the spouted region. The diameter of the spout increases with decreasing inclination. As inclination is greater than 60°, there is a neck near the jet.The gas-solids flow behavior was predicted by means of a hydrodynamic model of dense gas-solid flow in spouted beds. Constitutive equations describing the particle interactions and friction of particles and viscosity were incorporated into a hydrodynamic simulation computer program. The effect of operating conditions (inverted cone inclination and gas spouting velocity) on particle velocity and concentration in the three zones of spouted beds: spout, annulus and fountain were numerically studied. Both vertical and horizontal particle velocities increased with increasing spouting gas velocity in the spouted region. The diameter of the spout increases with decreasing inclination. As inclination is greater than 60°, there is a neck near the jet.

关 键 词：气固喷动床 气固两相双流体模型 数值模拟 

分 类 号：TK229[动力工程及工程热物理—动力机械及工程]