带肋通道中烟气细颗粒物团聚情况的数值模拟  

Numerical simulation of aggregation of fine particles in ribbed channel

作　　者：贾桂鹏 杨历[1] 陈占秀[1] 刘志勇 李阳[1] JIA Guipeng;YANG Li;CHEN Zhanxiu;LIU Zhiyong;LI Yang(School of Energy and Environmental Engineering,Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]河北工业大学能源与环境工程学院,天津300401

出　　处：《河北工业大学学报》2018年第2期43-48,共6页Journal of Hebei University of Technology

基　　金：河北省高等学校科学技术研究项目(ZD2015128;ZD2016163);河北工业大学能环学院动力工程领域专业学位研究生创新项目

摘　　要：通过数值模拟研究含有扰流柱带肋通道的细颗粒预处理装置的湍流团聚特性,分别考虑了不同初始颗粒粒径,不同入口颗粒体积分数和不同入口流速情况下对颗粒湍流团聚的影响.计算采用k-ε耦合颗粒群平衡模型(PBM),结果表明在本文讨论的初始粒径范围内,初始粒径越大颗粒团聚效果越好;对于不同入口体积分数工况下,发现体积分数越大团聚效果越好;而由于速度工况中速度与流场中湍流耗散率成正比,所以可以发现速度越大湍流耗散率越大从而导致团聚效果越好.The turbulence aggregation of fine particle pretreatment device with ribbed channel is studied through numerical simulation.The effects of different original particle size,volume fraction of different introduced particles and different inlet flow rates on turbulence aggregation were discussed respectively.The k-εcoupled particle swarm model(PBM)was adopted.The results show that in the initial particle size range discussed,if the initial particle size becomes larger,the aggregation effect will be better;In the case of different inlet volume fraction,it is found that if the volume fraction is larger.the aggregation effect will be better;and the velocity is proportional to the turbulence dissipation rate in the flow field.So we can see that the greater the velocity,the better aggregation effect the greater the turbulence dissipation rate leads to.

关 键 词：细颗粒 湍流聚并 带肋通道 颗粒群平衡 湍流耗散率 

分 类 号：TK121[动力工程及工程热物理—工程热物理]