08.包钢工业园区颗粒物扩散的数值模拟

陈义胜¹陈红妃²赵凯²

(1.内蒙古科技大学分析测试中心，内蒙古 包头 014010；2.内蒙古科技大学 材料与冶金学院，内蒙古 包头 014010；)

关键词：颗粒物；DPM模型；数值模拟

中图分类号：V211.3       文献标识码：A

摘要：本文应用DPM模型，结合包头市气象因素，对包钢工业园区排放的颗粒物在不同大气风速（1m/s、2m/s、3m/s、4m/s)、不同颗粒物粒径(2.5um、10um、20um、30um）条件下的迁移运动扩散情况进行了数值模拟。湍流模拟采用标准双方程模型。结果表明，在其他条件不变的情况下，风速越大，颗粒物扩散越快，因而造成的污染越小；而颗粒物粒径越大，由于受到重力作用，其扩散速度越慢，因此其影响范围越小，造成的污染区域越小。

Numerical simulation of particulate matter dispersionof Baotou Steel Industrial Park

CHEN Yi-sheng¹    CHEN Hong-fei²ZHAOKai²

（1.Analytic Center, Inner Mongolia Universityof Science and Technology，Baotou 014010, China；2、Materials and Metallurgical Engineering,Inner Mongolia University of Science and Technology, Baotou,014010,China）

Keywords：particulate matter；DPM model；numerical simulation

Abstract: Basedon discrete phase model, combined with meteorological factors of Baotou City, asimulation was carried out to study particles dispersion of Baotou steelindustrial park at different speed with different diameters. In thissimulation, a standard two-equation model was employedas the turbulence model of atmosphere flow. The numerical simulation resultsindicated that, in the case of other conditions unchanged, the bigger the windspeed is, the faster the particles dispersion can get, resultingin less pollution. The bigger the particle size is, the slower the speed becomesdue to gravity,then bringing about smaller scope of pollution influence andregion of pollution.