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DOI	10.1016/j.scs.2021.103352
	A parametric optimisation study of urban geometry design to assess outdoor thermal comfort
	Ibrahim, Yasser; Kershaw, Tristan; Shepherd, Paul; Elwy, Ibrahim
通讯作者	Kershaw, T (corresponding author), Univ Bath, Dept Architecture & Civil Engn, Bath BA2 7AY, Avon, England.
来源期刊	SUSTAINABLE CITIES AND SOCIETY
ISSN	2210-6707
EISSN	2210-6715
出版年	2021
卷号	75
英文摘要	Over the last two decades, urban geometry has been shown to be a key determinant of the microclimatic con-ditions in urban areas. This study uses the Ladybug-tools, the plugins of Grasshopper3D to optimise building heights, street widths and orientation to maximise outdoor thermal comfort, represented by the diurnal average Universal Thermal Climate Index (UTCI). In the hot-arid climate of Cairo, Egypt, the optimised parameters of symmetrical and asymmetrical urban canyons are compared with the Egyptian Construction Act's design reg-ulations. The results show a strong negative correlation between the height-to-width (H/W) ratios and the output UTCI, with R-2 = 0.71, and much stronger (R-2 = 0.91) if east-west orientations are excluded from the results, exceeding correlations previously reported for Cairo. Maximum UTCI reductions due to changing H/W and orientation approach similar to 6 degrees C. Considerable variation is shown in the strength of the correlation between UTCI and the asymmetrical H/W ratio of each flank, with R-2 = 0.81 for Southeast side compared to R-2 = 0.4 for Northwest side. Design recommendations are given urban planners based on using the optimised parameters that at least achieve a UTCI reduction benchmark that exceeds those resulting from using the regulations' thresholds.
英文关键词	Thermal comfort UTCI Urban geometry Ladybug Optimisation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000712067400003
WOS关键词	CLIMATE ; SIMULATION ; HOT ; TEMPERATURE ; IMPACT ; CANYON ; ORIENTATION ; PERFORMANCE ; VEGETATION ; STRESS
WOS类目	Construction & Building Technology ; Green & Sustainable Science & Technology ; Energy & Fuels
WOS研究方向	Construction & Building Technology ; Science & Technology - Other Topics ; Energy & Fuels
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368135
作者单位	[Ibrahim, Yasser; Kershaw, Tristan; Shepherd, Paul] Univ Bath, Dept Architecture & Civil Engn, Bath BA2 7AY, Avon, England; [Elwy, Ibrahim] Mil Tech Coll, Dept Architecture Engn, Cairo 11662, Egypt
推荐引用方式 GB/T 7714	Ibrahim, Yasser,Kershaw, Tristan,Shepherd, Paul,et al. A parametric optimisation study of urban geometry design to assess outdoor thermal comfort[J],2021,75.
APA	Ibrahim, Yasser,Kershaw, Tristan,Shepherd, Paul,&Elwy, Ibrahim.(2021).A parametric optimisation study of urban geometry design to assess outdoor thermal comfort.SUSTAINABLE CITIES AND SOCIETY,75.
MLA	Ibrahim, Yasser,et al."A parametric optimisation study of urban geometry design to assess outdoor thermal comfort".SUSTAINABLE CITIES AND SOCIETY 75(2021).