气候变化领域集成服务门户(CCPortal): Sensitivity of urban morphology and the number of CFD simulated wind directions on pedestrian wind comfort and safety assessments

CCPortal

DOI	10.1016/j.buildenv.2024.111310
	Sensitivity of urban morphology and the number of CFD simulated wind directions on pedestrian wind comfort and safety assessments
	Hagbo, Trond-Ola; Giljarhus, Knut Erik Teigen
发表日期	2024
ISSN	0360-1323
EISSN	1873-684X
起始页码	253
卷号	253
英文摘要	Pedestrian wind comfort and safety are critical in urban design, especially as cities densify and climate change impacts intensify. While Computational Fluid Dynamics (CFD) simulations are increasingly used in these assessments, a universally agreed-upon number of wind directions for accurate results has yet to be established. This study addresses this gap by exploring the influence of urban morphology, characterized by different degrees of urbanization and building layouts, on the required number of wind directions for accurate assessments. Extensive CFD simulations were conducted in five geometrically diverse locations: Bryne, Oslo, London, Singapore, and New York. Pedestrian wind comfort maps were generated, and velocity amplification factor (VAF) dynamics were analyzed. The results suggest that urban complexity does not significantly affect the required number of wind directions for reliable assessments. The study provides practical guidance for selecting the number of wind directions based on the study's focus: a minimum of 8 for basic assessments, 24 for high-accuracy assessments, and at least 36 for safety-focused assessments. This research significantly contributes to urban planning and design, empowering stakeholders with valuable insights for shaping resilient and comfortable urban environments.
英文关键词	CFD; RANS; Urban morphology; Urbanization; Pedestrian wind comfort and safety; Wind directions
语种	英语
WOS研究方向	Construction & Building Technology ; Engineering
WOS类目	Construction & Building Technology ; Engineering, Environmental ; Engineering, Civil
WOS记录号	WOS:001201963800001
来源期刊	BUILDING AND ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/294675
作者单位	Universitetet i Stavanger
推荐引用方式 GB/T 7714	Hagbo, Trond-Ola,Giljarhus, Knut Erik Teigen. Sensitivity of urban morphology and the number of CFD simulated wind directions on pedestrian wind comfort and safety assessments[J],2024,253.
APA	Hagbo, Trond-Ola,&Giljarhus, Knut Erik Teigen.(2024).Sensitivity of urban morphology and the number of CFD simulated wind directions on pedestrian wind comfort and safety assessments.BUILDING AND ENVIRONMENT,253.
MLA	Hagbo, Trond-Ola,et al."Sensitivity of urban morphology and the number of CFD simulated wind directions on pedestrian wind comfort and safety assessments".BUILDING AND ENVIRONMENT 253(2024).