Aspect ratio effect on natural convection in a square enclosure with a sinusoidal active thermal wall using a thermal non-equilibrium model

doi:10.1080/10407782.2016.1173474

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Aspect ratio effect on natural convection in a square enclosure with a sinusoidal active thermal wall using a thermal non-equilibrium model
	Wu, Feng 2; Wang, Gang 1; Zhou, Wenjing 3
刊名	NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
	2016
卷号	70 期号:3 页码:310-329
ISSN号	1040-7782
DOI	10.1080/10407782.2016.1173474
英文摘要	A numerical investigation of the aspect ratio effect on natural convection in a square enclosure is carried out by adopting the local thermal non-equilibrium model. The top and bottom walls of the enclosure are adiabatic, the left vertical wall is partially heated and cooled by the sinusoidal thermal boundary condition, and the right vertical wall is maintained at uniform thermal boundary condition. The results show the value of periodicity parameter increasing. The streamlines vary in different patterns, rotating clockwise and counterclockwise simultaneously when N > 1, and the number of clockwise and counterclockwise rotating cells increases with the increase of N and equals the value of N. The sinusoidal local Nusselt number profiles are observed and the wave amplitude of local Nusselt number decreases with the increase of aspect ratio, and the absolute values of average Nusselt number at left wall of porous cavity reach maximum when Ar = 1. The absolute value of solid-to-fluid temperature differences decreases as the inter-phase heat transfer coefficient (H) increases and it increases as the value of aspect ratio increases. The total heat transfer of porous cavity can be enhanced by increasing the aspect ratio and the thermal conductivity ratio.
资助项目	China Postdoctoral Science Foundation[2013M540768]
WOS研究方向	Thermodynamics ; Mechanics
语种	英语
出版者	TAYLOR & FRANCIS INC
WOS记录号	WOS:000380741800006
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33874]
专题	土木工程学院
通讯作者	Wu, Feng
作者单位	1.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou, Gansu, Peoples R China 2.Northwest Univ, Sch Chem Engn, Taibai North Rd 229, Xian 710069, Peoples R China 3.Xi An Jiao Tong Univ, Sch Energy & Power Engn, Xian, Peoples R China
推荐引用方式 GB/T 7714	Wu, Feng,Wang, Gang,Zhou, Wenjing. Aspect ratio effect on natural convection in a square enclosure with a sinusoidal active thermal wall using a thermal non-equilibrium model[J]. NUMERICAL HEAT TRANSFER PART A-APPLICATIONS,2016,70(3):310-329.
APA	Wu, Feng,Wang, Gang,&Zhou, Wenjing.(2016).Aspect ratio effect on natural convection in a square enclosure with a sinusoidal active thermal wall using a thermal non-equilibrium model.NUMERICAL HEAT TRANSFER PART A-APPLICATIONS,70(3),310-329.
MLA	Wu, Feng,et al."Aspect ratio effect on natural convection in a square enclosure with a sinusoidal active thermal wall using a thermal non-equilibrium model".NUMERICAL HEAT TRANSFER PART A-APPLICATIONS 70.3(2016):310-329.