旋风分离器内三维两相流场的数值模拟  

.Numerical Simulation of Three Dimensional and Two Phase Flow in a Cyclone Separator.

作　　者：林玮[1] 王乃宁[1] 

机构地区：[1]上海华东工业大学

出　　处：《动力工程》1999年第1期72-80,共9页Power Engineering

摘　　要：对旋风分离器内的三维两相流场进行了数值模拟，控制方程在三维贴体坐标系下用非交错的ＳＩＭＰＬＥ算法进行求解，得到了分离器内的速度和压力场，计算表明旋风分离器进气形式的非对称性决定了其流场的三维性；轴向速度在中心处有滞流、回流现象；通过对颗粒运动轨迹的分析，发现收缩的锥体段对颗粒捕获也有不利的一面。Abstract Three dimensional and two phase flow in a cyclone separator is simulated in this paper.The control equations are solved in three body fitted coordinates using non staggered SIMPLE algorithm.The velocities and pressure fields are obtained.The results show that the non symmetry of inlet flow into cyclone determines the three dimensional property of the flow.The stagnation and reverse of axial velocity near cyclone center is observed.The analysis to particle trajectories show that the hopper of cyclone has the negative effect on particle collection

关 键 词：旋风分离器 两相流 锅炉 三维流场 数值模拟 

分 类 号：TK284.5[动力工程及工程热物理—动力机械及工程]