带内锥的切向进口扩散式方形分离器内气相流场的数值模拟  

Numerical Simulation of Gas Flow in the Tangential Inlet Diffuse Square Separator

作　　者：李浩[1] 刁永发[1] 顾平道[1] 李勋[1] 

机构地区：[1]东华大学环境科学与工程学院,上海201620

出　　处：《东华大学学报（自然科学版）》2008年第6期732-735,751,共5页Journal of Donghua University(Natural Science)

基　　金：上海市重点学科建设项目资助(B604)

摘　　要：设计了一种带内锥的切向进口扩散式方形分离器,利用了考虑各向异性的雷诺应力湍流模型对分离器内的气相流动情况进行了数值模拟研究,分析了其内部气相流场的轴向、切向和径向速度分布以及压力分布情况,并计算了其压降.数值模拟结果显示分离器内呈典型的双层流动结构,方形截面在其拐角处对气流存在扰动,主要影响其切向速度,压力分布在反射锥开口处存在分界,分离器的压降随进口速度增大而增大.A tangential inlet diffuse square separator was studied to simulate the gas flow by using Reynolds stress equation model（RSM） that considers anisotropic situation. The distribution of velocity and pressure were analyzed in direction of axial, tangential and radial repetitively. The results show that there is a typical double deck flow structure in the separator, and a tangential velocity influences the square section of the corner, whose pressure distribution was divided in the inlet of reflecting cone, and the pressure loss also increases with the increasing rate of inlet velocity.

关 键 词：扩散式方形分离器 雷诺应力湍流模型(RSM) 数值模拟 

分 类 号：TK284.8[动力工程及工程热物理—动力机械及工程]