粒子在空调系统风管渐缩段内沉积的数值模拟  

Simulation of Particle Deposition in Gradually Reduce Segment of Air-conditioning Duct

作　　者：刘泽华[1] 周喜全[1] 张杰[1] 孟兰美[1] 

机构地区：[1]南华大学城市建设学院

出　　处：《建筑热能通风空调》2009年第4期73-76,共4页Building Energy & Environment

基　　金：湖南省自然基金资助项(08JJ3094)

摘　　要：本文采用雷诺应力气流场模型(RSM)和随机轨道粒子模型,对粒子在空调系统风管渐缩段内沉降规律进行了探讨,模拟了粒径为10～200μm范围内的7组粒子,在入口平均风速分别为4 m/s、6 m/s、8m/s时,在渐缩段各个表面的沉积情况,并与渐缩段前直管段的沉积进行了对比,得出了沉积规律。This paper discussed particle deposition in gradually reduce segment of air-conditioning duct using RSM （Reynold Stress Model） and random trajectory particle model. Simulation of particle deposition in each internal surface of gradually reduce segment with nominal particle diameters of 10-200μm were carried out with air velocity 4 m/s, 6 m/s and 8m/s. Contrasted with particle deposition of the straight duct, the deposition rule was presented.

关 键 词：渐缩段 沉积 模拟 

分 类 号：TU831.4[建筑科学—供热、供燃气、通风及空调工程]