非均匀布风流化床的DEM模拟  

Discrete Element Method-based Simulation of a Fluidized Bed with Non-uniformly Distributed Air

作　　者：尹斌[1] 章明川[1] 宋玉宝[1] 吴江[1] 

机构地区：[1]上海交通大学能源系,上海200240

出　　处：《热能动力工程》2003年第2期163-165,共3页Journal of Engineering for Thermal Energy and Power

摘　　要：对二维非均匀布风流化床内的颗粒运动进行了数值模拟 ,用欧拉方法处理气相场的同时用拉格朗日方法处理离散颗粒场 ,直接跟踪颗粒场中的每个颗粒。模拟结果表明 ,非均匀布风流化床内存在颗粒的内循环运动 。A numerical simulation was conducted of the particle movement in a fluidized bed with two dimensional non uniformly distributed air. In addition to dealing with a gas phase field by the use of Euler method a Lagrangian method is employed to treat a discrete particle field, directly keeping track of each particle in the particle field. The results of simulation indicate that there exists in the fluidized bed with non uniformly distributed air an inner circulation movement of the particles. Hence, the mixing characteristics of the particles in the fluidized bed under discussion are superior to those in a conventional fluidized bed with uniformly distributed air.

关 键 词：非均匀布风 流化床 DEM 

分 类 号：TK221[动力工程及工程热物理—动力机械及工程]