旋流气固分离器内气粒两相运动特性及分离效率  

NUMERICAL SIMULATION OF GAS-SOLID FLOW MOTION CHARACTERISTICS AND DEPOSITION EFFICIENCY OF PARTICLES IN WATER-FILM CYCLONE SEPARATOR

作　　者：冉景煜[1] 张力[1] 辛明道[1] 

机构地区：[1]重庆大学动力工程学院,重庆400044

出　　处：《化工学报》2003年第10期1391-1396,共6页CIESC Journal

摘　　要：基于旋转气固多相流复杂的运动特征 ,结合旋流气固分离器的特点 ,同时考虑颗粒间的碰撞与并聚和喷水加湿对颗粒间并聚及碰撞、颗粒运动特性的影响 ,并考虑颗粒对气相的作用构建了描述旋流气固分离器内湍流气固多相流的三维时均方程组 .模型封闭采用κ ε RNG模型 ,数值模拟了旋流气固分离器内气固两相流场、固相运动特性及分离效率 。Based on the complex features of rotating gas-solid flow, the effects of injecting water, and the collision between particles and deposition efficiency, a 3-D mathematical model is established. The k-Ε/RNG model was used, and then the gas-solid flow characteristics and the deposition efficiency were simulated. The significant results were obtained: the initial position of the particles at the entrance of the separator and the particles diameter play an important role in particles moving feature. The sorption of water-film and ejecting water parameter would affect the particles motion and deposition efficiency. The suitable calculated equation of deposition efficiency for the water-film cyclone separator was given and the experiment results were also shown.

关 键 词：气固多相流 运动特性 分离器 分离效率 

分 类 号：TK282.5[动力工程及工程热物理—动力机械及工程]