气候变化领域集成服务门户(CCPortal): Wind-induced natural ventilation of re-entrant bays in a high-rise building

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DOI	10.1016/j.jweia.2010.11.002
	Wind-induced natural ventilation of re-entrant bays in a high-rise building
	Cheng, C. K. C.; Lam, K. M.; Leung, Y. T. A.; Yang, K.; Danny, H. W. Li; Sherman, C. P. Cheung
通讯作者	Cheng, CKC (通讯作者)
发表日期	2011
ISSN	0167-6105
起始页码	79
结束页码	90
卷号	99 期号:2-3
英文摘要	This paper reports a systematic computational study of wind-induced natural ventilation and pollutant transport of re-entrant bays on a total of 30 generic building models of different building heights and with bays of different dimensions. Mean wind flow around each building model and wind-induced flow inside re-entrant bays are computed. To determine the ventilation efficiency of the bay, the computed flow field is used to disperse a scalar pollutant initially occupying the entire bay at a uniform concentration. The subsequent time decay of pollutant concentration inside the bay is studied and the ventilation efficiency is quantified by the retention time. The results show that wind-induced flow inside the bay, especially on the building side face, is complex and highly three-dimensional. Air exchange rates through the roof opening and vertical side opening are analyzed for each bay and their relationship to the ventilation efficiency is discussed. The bays on the building side faces are much worse ventilated than those on the windward or leeward building face. The deeper the side bay, the worse is the air exchange and ventilation. The building height is found to have a governing effect on the ventilation of the windward and leeward re-entrant bays. (C) 2010 Elsevier Ltd. All rights reserved.
关键词	TALL BUILDINGS REFUGE FLOOR ENVIRONMENT COURTYARD ATRIUM TUNNEL ROW CFD
英文关键词	Natural ventilation; High-rise building; Wind-structure interaction; Micro-climate; CFD simulations; Re-entrant bays; Pollutant dispersion
语种	英语
WOS研究方向	Engineering ; Mechanics
WOS类目	Engineering, Civil ; Mechanics
WOS记录号	WOS:000288722700001
来源期刊	JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257933
推荐引用方式 GB/T 7714	Cheng, C. K. C.,Lam, K. M.,Leung, Y. T. A.,et al. Wind-induced natural ventilation of re-entrant bays in a high-rise building[J]. 中国科学院青藏高原研究所,2011,99(2-3).
APA	Cheng, C. K. C.,Lam, K. M.,Leung, Y. T. A.,Yang, K.,Danny, H. W. Li,&Sherman, C. P. Cheung.(2011).Wind-induced natural ventilation of re-entrant bays in a high-rise building.JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS,99(2-3).
MLA	Cheng, C. K. C.,et al."Wind-induced natural ventilation of re-entrant bays in a high-rise building".JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS 99.2-3(2011).