Numerical analysis of natural convection in a porous cavity with the sinusoidal thermal boundary condition using a thermal nonequilibrium model | |
Wu, Feng1; Lu, Dilai1; Wang, Gang2 | |
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. |
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