带内锥的扩散式分离器内两相流动的数值模拟  

Numerical Simulation of Two-Phase Flow in Tangential Inlet Enlarged Diffusion Square Separator

作　　者：李浩[1] 刁永发[1] 

机构地区：[1]东华大学环境科学与工程学院

出　　处：《洁净与空调技术》2008年第1期17-20,共4页Contamination Control & Air-Conditioning Technology

摘　　要：对于一种带内锥的切向进口扩散式方形分离器,利用考虑各向异性的雷诺应力湍流模型和颗粒随机轨道模型对其内部的两相流动情况进行了数值模拟,分析了其内部不同截面高度的气相流场的轴向、切向和径向速度分布,计算了颗粒分级分离效率,颗粒轨迹等。数值模拟结果表明,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,该分离器对8以下颗粒分离效率较低。This paper researched a tangential inlet enlarged diffusion square separator by the RSM and DPM model which consider anisotropic situation, analyses the distribution of axial, tangential and radial velocity in different sections, calculates the separate efficiency with different diameters and particle tracks. Results shows that there＇s the typical double deck flow structure in the separator and square section interferes the flow＇s tangential velocity in the comer, and the efficiency is low when particle diameter is less than 8 μm.

关 键 词：方形分离器 雷诺应力湍流模型 数值模拟 

分 类 号：TQ019[化学工程]