Numerical Study of Wind-driven Natural Ventilation in a High-rise Residential Building
In the present study, the summer air flow in a dwelling unit of a wind-driven naturally ventilated high-rise residential building is investigated using computational fluid dynamics (CFD). The wind fields under two unit design schemes are simulated respectively. Their simulation results are compared, and the impacts of natural ventilation openings location and size on the indoor wind environment are also discussed. After that, the optimization advices for the adverse design scheme are brought forward and carried out in its further optimization. The study indicates that the mean air speed, comfortable area of the occupied region, air change rate and ventilation rate in the dwelling unit increase obviously with the increase of outdoor wind pressure difference under wind-driven natural ventilation. But the uniformity of wind speed distribution in the wind-driven naturally ventilated high-rise residential building has little relationship with the change of the value of outdoor wind pressure difference. And locating the inlet opening in the corner of windward face of the high-rise residential building may short cut the wind and couldnt channel the natural wind into the building effectively. From the natural ventilation point of view, it is better to locate the inlet or outlet opening in the middle of wall when this wall is windward or leeward wall. In addition, using large total area of inlet and outlet openings and smaller inlet openings than outlet openings is helpful to enhance natural ventilation in the high-rise residential building.
high-rise residential building natural ventilation computational fluid dynamics
Li Qiong Meng Qing-lin Zhao Li-hua
School of Architecture, South China University of Technology, Guangzhou 510640, China
国际会议
广州
英文
401-405
2006-12-01（万方平台首次上网日期，不代表论文的发表时间）