辐射防护2011，Vol.31Issue(4)：202-208,237,8.
建筑物周围流场与污染物扩散的数值与风洞模拟研究
Numerical and Wind-Tunnel Simulations of Flow and Dispersion around a Building
摘要
Abstract
Flow and dispersion of gases released by sources located on its roof was simulated using k- ε （RNG） and the large eddy simulation （LES） turbulence model in different wind direction, with numerical results were compared with wind-tunnel data. The result of flow shows that, numerical simulation can better simulate the top backflow of the building and the rear cavity zones, etc. The result of concentration shows that, numerical simulation result is in good agreement with that from wind tunnel experiment in the windward side and the top backflow zones of the building. However, numerical simulation result is slightly higher than that from wind tunnel experiment in the rear cavity zones. As a whole, compared with wind tunnel experiment, LES model can better simulate the variation of pollutant＇ concentration field and flow field around the buildings.关键词
数值模拟/风洞实验/建筑物/流动/扩散Key words
Numerical Simulation/Wind Tunnel Experiment/Building/Flow/Dispersion分类
资源环境引用本文复制引用
乔清党,郭栋鹏,姚仁太,文云朝,范丹..建筑物周围流场与污染物扩散的数值与风洞模拟研究[J].辐射防护,2011,31(4):202-208,237,8.基金项目
国家“十一五”核能开发课题. （）
