Buoyancy induced convection in a porous cavity with sinusoidally and partially thermally active sidewalls under local thermal non-equilibrium condition

doi:10.1016/j.icheatmasstransfer.2016.03.026

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Buoyancy induced convection in a porous cavity with sinusoidally and partially thermally active sidewalls under local thermal non-equilibrium condition
	Wu, Feng 2; Wang, Gang 1; Zhou, Wenjing 3
刊名	INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
	2016-07
卷号	75 页码:100-114
关键词	Natural convection Local thermal non-equilibrium model Sinusoidal heating and cooling Partially active walls Porous medium
ISSN号	0735-1933
DOI	10.1016/j.icheatmasstransfer.2016.03.026
英文摘要	Steady non-Darcy natural convection in a porous cavity with non-uniform 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 cavity are adiabatic. The left vertical wall is partially heated and cooled by sinusoidal temperature profile and the right side wall of the cavity is partially cooled by uniform thermal boundary condition. The results show that, the oscillation amplitude of the local Nusselt number profiles (Nu(fy), Nu(sy))along the Y coordinate decreases with the increase of H. The difference of the local Nusselt numbers between different cases of partial cooling (case A-case D) can be reduced by increasing of N. The difference of solid-to-fluid temperature differences between different cases of partial cooling can be reduced by increasing of H and gamma. Positive values of the average Nusselt number appear at the left side wall of the porous cavity, which indicates that there exists heat transfer along the positive direction of the X axis in the porous cavity. Compared with the left wall of the cavity, it is faster for the right wall to reach the thermal equilibrium state, which approaches a constant value for low values of H (H = 3000). (C) 2016 Elsevier Ltd. All rights reserved.
资助项目	China Postdoctoral Science Foundation[2013M540768]
WOS研究方向	Thermodynamics ; Mechanics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000378458100013
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33658]
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 730050, 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 Chem Engn & Technol, Xian 710049, Peoples R China
推荐引用方式 GB/T 7714	Wu, Feng,Wang, Gang,Zhou, Wenjing. Buoyancy induced convection in a porous cavity with sinusoidally and partially thermally active sidewalls under local thermal non-equilibrium condition[J]. INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER,2016,75:100-114.
APA	Wu, Feng,Wang, Gang,&Zhou, Wenjing.(2016).Buoyancy induced convection in a porous cavity with sinusoidally and partially thermally active sidewalls under local thermal non-equilibrium condition.INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER,75,100-114.
MLA	Wu, Feng,et al."Buoyancy induced convection in a porous cavity with sinusoidally and partially thermally active sidewalls under local thermal non-equilibrium condition".INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER 75(2016):100-114.