Numerical analysis of natural convection in a porous cavity with the sinusoidal thermal boundary condition using a thermal nonequilibrium model

doi:10.1080/10407782.2015.1127025

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Numerical analysis of natural convection in a porous cavity with the sinusoidal thermal boundary condition using a thermal nonequilibrium model
	Wu, Feng 1; Lu, Dilai 1; Wang, Gang 2
刊名	NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
	2016
卷号	69 期号:11 页码:1280-1296
ISSN号	1040-7782
DOI	10.1080/10407782.2015.1127025
英文摘要	Steady non-Darcy natural convection in a porous cavity with sinusoidal thermal boundary condition is studied numerically by adopting the local thermal non-equilibrium (LTNE) model in this paper. The top and bottom walls of the enclosure are adiabatic, whereas the left vertical wall is partially heated and cooled by a sinusoidal temperature profile and the right vertical wall is cooled by the uniform thermal boundary condition. The results show that, compared with the uniform boundary conditions, the sinusoidal boundary conditions can enhance the heat transfer rate of a porous cavity. The values of local Nusselt numbers at the left sidewall can be enhanced by sinusoidal thermal boundary condition and the maximum absolute value of the local Nusselt number appears near the top and bottom walls of the cavity. The thermal nonequilibrium effect on natural convection in the porous cavity can be enhanced by the sinusoidal thermal boundary condition, and the absolute value of the dimensionless solid-to-fluid temperature differences decreases as the thermal conductivity ratio (gamma) increases and approaches zero when gamma = 10. The periodicity parameter (N) has a significant effect on the heat transfer rate of the porous cavity and the effect of periodicity parameter on heat transfer in porous cavity reduces gradually with the increase of H.
资助项目	Shaanxi Provincial Natural Science Foundation of China[2014JM2053]
WOS研究方向	Thermodynamics ; Mechanics
语种	英语
出版者	TAYLOR & FRANCIS INC
WOS记录号	WOS:000376685400006
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33860]
专题	土木工程学院
通讯作者	Wu, Feng; Wang, Gang
作者单位	1.NW Univ Xian, Sch Chem Engn, Taibai North Rd 229, Xian 710069, Peoples R China 2.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wu, Feng,Lu, Dilai,Wang, Gang. Numerical analysis of natural convection in a porous cavity with the sinusoidal thermal boundary condition using a thermal nonequilibrium model[J]. NUMERICAL HEAT TRANSFER PART A-APPLICATIONS,2016,69(11):1280-1296.
APA	Wu, Feng,Lu, Dilai,&Wang, Gang.(2016).Numerical analysis of natural convection in a porous cavity with the sinusoidal thermal boundary condition using a thermal nonequilibrium model.NUMERICAL HEAT TRANSFER PART A-APPLICATIONS,69(11),1280-1296.
MLA	Wu, Feng,et al."Numerical analysis of natural convection in a porous cavity with the sinusoidal thermal boundary condition using a thermal nonequilibrium model".NUMERICAL HEAT TRANSFER PART A-APPLICATIONS 69.11(2016):1280-1296.