Numerical simulation of natural convection in a porous cavity with linearly temperature distributions under the local thermal nonequilibrium condition | |
Wu, Feng1; Zhou, Wenjing2; Wang, Gang3; Ma, Xiaoxun1; Wang, Yuqi1 | |
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 | 10407782 |
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 (Nusy) 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 γ (γ = 1, 10). © 2015 Taylor and Francis Group, LLC. |
资助项目 | China Postdoctoral Science Foundation funded project[2013M540768] |
WOS研究方向 | Thermodynamics ; Mechanics |
语种 | 英语 |
出版者 | Taylor and Francis Ltd. |
WOS记录号 | WOS:000357800400005 |
状态 | 已发表 |
内容类型 | 期刊论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/113468] |
专题 | 兰州理工大学 |
通讯作者 | Wu, Feng |
作者单位 | 1.NW Univ Xian, Sch Chem Engn, Xian 710069, Peoples R China 2.Xi An Jiao Tong Univ, Sch Energy & Power Engn, Minist Educ, Key Lab Thermofluid Sci & Engn, Xian 710049, 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. |
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