Numerical Simulation of Natural Convection in a Porous Cavity with Linearly Temperature Distributions Under the Local Thermal Nonequilibrium Condition

doi:10.1080/10407782.2015.1052316

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	Numerical Simulation of Natural Convection in a Porous Cavity with Linearly Temperature Distributions Under the Local Thermal Nonequilibrium Condition
	Wu, Feng 2; Zhou, Wenjing 1; Wang, Gang 3; Ma, Xiaoxun 2; Wang, Yuqi 2
刊名	NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
	2015-12-17
卷号	68 期号:12 页码:1394-1415
关键词	Enthalpy Heat generation Heat transfer coefficients Natural convection Porous materials Fluid and solids Heat transfer rate High thermal conductivity Local thermal non-equilibrium Numerical investigations Rectangular cavity Thermal equilibriums Uniform temperature
ISSN号	1040-7782
DOI	10.1080/10407782.2015.1052316
英文摘要	A numerical investigation of the natural convection heat transfer in a rectangular cavity filled with a heat-generating porous medium by adopting the local thermal nonequilibrium (LTNE) model is reported in this paper. The top and bottom walls of the enclosure are adiabatic, the left wall is linearly cooled, and the right wall is cooled by a linear or uniform temperature profile. The results show that the isotherms for the fluid and solid phases become similar with the increase of the interphase heat transfer coefficient H; the increasing heat transfer between the two phases brings their temperatures closer to each other and thus the solid and fluid phases are in a state of the thermal equilibrium at higher values of H. For case A, the interphase heat transfer coefficient has little influence on the heat transfer rate of the solid phase of the porous cavity and the heat transfer profile of the solid phase (Nu(sy)) is symmetrical with respect to the center point of line Y=0.5. For case B, the interphase heat transfer coefficient H has a significant effect on that at the right wall, and the total heat transfer of the heat-generating porous cavity is implemented by the right-side wall. The total heat transfer rate Q of case B is higher than that of case A at a high thermal conductivity ratio gamma (gamma=1, 10).
WOS研究方向	Thermodynamics ; Mechanics
语种	英语
出版者	TAYLOR & FRANCIS INC
WOS记录号	WOS:000357800400005
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33901]
专题	土木工程学院
作者单位	1.Xi An Jiao Tong Univ, Sch Energy & Power Engn, Minist Educ, Key Lab Thermofluid Sci & Engn, Xian 710049, Peoples R China; 2.NW Univ Xian, Sch Chem Engn, Xian 710069, Peoples R China; 3.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wu, Feng,Zhou, Wenjing,Wang, Gang,et al. Numerical Simulation of Natural Convection in a Porous Cavity with Linearly Temperature Distributions Under the Local Thermal Nonequilibrium Condition[J]. NUMERICAL HEAT TRANSFER PART A-APPLICATIONS,2015,68(12):1394-1415.
APA	Wu, Feng,Zhou, Wenjing,Wang, Gang,Ma, Xiaoxun,&Wang, Yuqi.(2015).Numerical Simulation of Natural Convection in a Porous Cavity with Linearly Temperature Distributions Under the Local Thermal Nonequilibrium Condition.NUMERICAL HEAT TRANSFER PART A-APPLICATIONS,68(12),1394-1415.
MLA	Wu, Feng,et al."Numerical Simulation of Natural Convection in a Porous Cavity with Linearly Temperature Distributions Under the Local Thermal Nonequilibrium Condition".NUMERICAL HEAT TRANSFER PART A-APPLICATIONS 68.12(2015):1394-1415.