首页|期刊导航|湖南大学学报（自然科学版）|Modeling and Assessment of Buoyancy-Driven Stratified Airflow in High-Space Industrial Hall
湖南大学学报（自然科学版）2009，Vol.36Issue(z1)：19-22,4.
Modeling and Assessment of Buoyancy-Driven Stratified Airflow in High-Space Industrial Hall
Modeling and Assessment of Buoyancy-Driven Stratified Airflow in High-Space Industrial Hall
摘要
Abstract
In industrial environment,heat sources often are contaminant sources and health threatening con-taminants are mainly passive,so a detailed understanding of airflow mode can assist in work environment hy-giene measurement and prevention.This paper presented a numerical investigation of stratified airflow scenario in a high-space industrial hall with validated commercial code and experimentally acquired boundary conditions.Based upon an actually undergoing engineering project,this study investigated the performance of the buoyancy-driven displacement ventilation in a large welding hall with big components manufactured.The results have demonstrated that stratified airflow sustained by thermal buoyancy provides zoning effect in terms of clean and polluted regions except minor stagnant eddy areas.The competition between negative buoyant jets from displace-ment radial diffusers and positive buoyant plume from bulk object constitutes the complex transport characteris-tics under and above stratification interface.Entrainment,downdraft and turbulent eddy motion complicate the upper mixing zone,but the exhaust outlet plays a less important role in the whole field flow.And the corre-sponding suggestions concerning computational stability and convergence,further improvements in modeling and measurements were given.关键词
modelling/buoyancy-driven/large enclosure/industrial ventilationKey words
modelling/buoyancy-driven/large enclosure/industrial ventilation分类
通用工业技术引用本文复制引用
WANG Han-qing,CHEN Ke,HU Jian-jun,KOU Guang-xiao,WANG Zhi-yong..Modeling and Assessment of Buoyancy-Driven Stratified Airflow in High-Space Industrial Hall[J].湖南大学学报（自然科学版）,2009,36(z1):19-22,4.基金项目
Supported by the National Natural Science Foundation of China(10775047).Hunan Provincial Natural Science Foundation of China(08JJ3093).the Key Program of Scientific and Technical of Hunan Province(2007FJ2006) （10775047）
