干旱区生态环境知识资源中心(Arid): Numerical Study on Natural Ventilation Characteristics of a Partial-Cylinder Opening for One-Sided-Windcatcher of Variable Air-Feeding Orientations in Taif, Saudi Arabia

Arid

DOI	10.3390/su132011310
	Numerical Study on Natural Ventilation Characteristics of a Partial-Cylinder Opening for One-Sided-Windcatcher of Variable Air-Feeding Orientations in Taif, Saudi Arabia
	Balabel, Ashraf; Alwetaishi, Mamdooh; El-Askary, Wageeh A.; Fawzy, Hamza
通讯作者	Balabel, A (corresponding author), Taif Univ, Coll Engn, Dept Mech Engn, POB 11099, At Taif 21944, Saudi Arabia. ; Alwetaishi, M (corresponding author), Taif Univ, Coll Engn, Dept Civil Engn, POB 11099, At Taif 21944, Saudi Arabia.
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2021
卷号	13 期号:20
英文摘要	To provide a clean and cheap source of natural ventilation in windy and arid zones, a windcatcher facility is the best option. This paper aims to study the effect of the inlet opening angle of a new windcatcher model with different values ranging from 60 & DEG; to 90 & DEG; for three different feeding orientations at leading-down, central-up, and trailing-down locations. The ventilation performance of the new one-sided windcatcher is numerically examined using CFD simulations, where the 3D RANS and k-epsilon equations are applied at different wind speeds. The flow features of the new models are analyzed and compared with a basic traditional model based on the induced air distribution, aerodynamic losses, and ventilation rates. Results revealed that the sharp edge of the inlet opening leads to an increase in the flow separation and recirculation zone, especially when the opening angle is increased. The highest pressure coefficient is achieved by the trailing-down model compared with the other windcatcher models at an opening angle of 90 & DEG;. The total pressure drop and ventilation rates increase in all the new windcatcher models due to the increase in the opening angle from 60 & DEG; to 90 & DEG;. At identical conditions, with an opening angle of 90 & DEG; and wind speed of 5 m/s, the trailing-down model achieved a higher pressure coefficient than the leading-down and central-up models by 20.55% and 37.37%, respectively. Furthermore, the trailing-down model could provide higher ventilation rates than the central-up and leading-down models by 31% and 42%, respectively. Finally, the trailing-down windcatcher model can be recommended as the best choice to provide natural ventilation at Taif City in Saudi Arabia.
英文关键词	green environment natural ventilation one-sided windcatcher numerical study
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000716278000001
WOS关键词	WIND-CATCHERS IMPACT ; PASSIVE VENTILATION ; THERMAL COMFORT ; PERFORMANCE ; FLOW ; BUILDINGS ; DESIGN ; SIMULATION ; TOWER ; CFD
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368321
作者单位	[Balabel, Ashraf] Taif Univ, Coll Engn, Dept Mech Engn, POB 11099, At Taif 21944, Saudi Arabia; [Alwetaishi, Mamdooh] Taif Univ, Coll Engn, Dept Civil Engn, POB 11099, At Taif 21944, Saudi Arabia; [El-Askary, Wageeh A.] Alexandria Higher Inst Engn & Technol AIET, Alexandria 21311, Egypt; [El-Askary, Wageeh A.; Fawzy, Hamza] Menoufia Univ, Fac Engn, Dept Mech Power Engn, Shibin Al Kawm 32511, Egypt
推荐引用方式 GB/T 7714	Balabel, Ashraf,Alwetaishi, Mamdooh,El-Askary, Wageeh A.,et al. Numerical Study on Natural Ventilation Characteristics of a Partial-Cylinder Opening for One-Sided-Windcatcher of Variable Air-Feeding Orientations in Taif, Saudi Arabia[J],2021,13(20).
APA	Balabel, Ashraf,Alwetaishi, Mamdooh,El-Askary, Wageeh A.,&Fawzy, Hamza.(2021).Numerical Study on Natural Ventilation Characteristics of a Partial-Cylinder Opening for One-Sided-Windcatcher of Variable Air-Feeding Orientations in Taif, Saudi Arabia.SUSTAINABILITY,13(20).
MLA	Balabel, Ashraf,et al."Numerical Study on Natural Ventilation Characteristics of a Partial-Cylinder Opening for One-Sided-Windcatcher of Variable Air-Feeding Orientations in Taif, Saudi Arabia".SUSTAINABILITY 13.20(2021).