粒子在通风管道中沉积的模型比较  

Model Compare of Particle Deposition in Ventilating Duct

作　　者：张杰[1] 刘泽华[1] 李雄志[1] 李慧敏[1] 谭凯旋[2] 

机构地区：[1]南华大学城市建设学院 [2]南华大学核资源与安全工程学院

出　　处：《建筑热能通风空调》2007年第5期30-34,44,共6页Building Energy & Environment

基　　金：国家自然科学基金项目(NO.:10675059)

摘　　要：颗粒物是一种普遍存在的污染物,由于其上富集了多种有毒物质且能沉积到人体呼吸系统深处所以极具危险性。本文详述了粒子在通风管道中沉降的各种预测方法:经验公式法、欧拉模型法、亚层模型法、拉格朗日模型法,在比较各种模型的基础上分析了各种模型的优缺点。经验公式能较好地吻合实验数据,但可能无理论基础;由于现阶段拉格朗日模型对计算机的要求较高使得在一般情况下使用欧拉模型,其中湍流泳模型是运用在HVAC系统中最好的欧拉模型。Particle is a common contamination. Some toxicant enrich on the particle and which could deposit in the respiratory system of human being, so the fatalness is obvious. This paper describes some forecast method of particle deposition in ventilating duct, such as empirical equation, Eulerian models, sublayer models, Lagrangian simulation, and merits and shortcomings of each method were analyzed on the basis of comparing these models. Empirical equation can fit experiment datum perfectly, but perhaps there is no theory basis. Wide application of Eulerian models in virtue of the high request of computer of Lagrangian simulation in present. It＇s interesting to know turbophoretic models is the best model among the Eulefian models.

关 键 词：粒子 沉积 通风管道 模型比较 

分 类 号：TU834[建筑科学—供热、供燃气、通风及空调工程]