THE EFFECT OF STREET CANYONS ON WIND DRIVEN NATURAL VENTILATION IN BUILDINGS
This paper is concerned with wind driven natural ventilation in buildings located in street canyon environment. Typical street canyons with different configuration are considered. Flow field in street canyons and pressure distribution on windward side and leeward side of the studied building are obtained though numerical simulation using RNG k-ε turbulence closure model. It is found that ventilation rate of the studied building is strongly dependent upon the layout of street and type of flow regime inside the canyon. Both the canyon height to width ratio (h/w) and relative height (h2/h1) have great influence on pressure distribution on envelop of the building. Only in relatively short canyons, canyon length to height ratio (l/h) has significant effect on ventilation rate of the studied building. When the rate of l/h is larger than 3.0, its effect can be ignored.
Natural ventilation Street canyon CFD RNG k-ε model
Jing Liu Jianing Zhao Dexing Sun
School of Municipal & Environmental Engineering, Harbin Institute of Technology Harbin 150090, China
国际会议
北京
英文
2007-09-07（万方平台首次上网日期，不代表论文的发表时间）