Turbulent Rayleigh-Bénard convection in a cubical container filled with cold water near its maximum density
Turbulent Rayleigh-Bénard convection in a cubical container filled with cold water near its maximum density
复制标题
装有接近其最大密度的冷水的立方容器中的湍流瑞利-贝纳德对流
DOI:
10.1016/j.ijheatmasstransfer.2018.08.044
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发表时间:
2018-12
影响因子:
5.2
通讯作者:
Yu-Peng Hu
中科院分区:
文献类型:
--
作者:
Xiao-Jie Huang;You-Rong Li;Li Zhang;Yu-Peng Hu
In order to understand the effects of Rayleigh number and the density inversion parameter on the flow structures, the turbulent characteristics and the heat transfer ability, a series of large eddy simulations on turbulent Rayleigh-Bénard convection in a cubical container with cold water near its maximum density were carried out. Results indicate that the large scale circulation (LSC) moves along the diagonal plane at small and medium density inversion parameters. However, at a large density inversion parameter, the LSC disappears. With the increase of the density inversion parameter, there are an increase of temperature in the bulk region and a decrease of penetration depth. Furthermore, with the increase of Rayleigh number, the deformation of isothermal surfaces becomes intense until the plumes are observed. At the same time, the scale of vortices reduces and the fluctuation of Nusselt number amplifies with the increase of Rayleigh number. Based on the numerical results, the dependence of Nusselt number on Rayleigh number and the density inversion parameter is achieved within a satisfactory uncertainty.
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影响因子:
3.5
作者:
A. Getling;E. Spiegel
通讯作者:
A. Getling;E. Spiegel
影响因子:
4.6
作者:
R. Stevens;H. Clercx;D. Lohse
通讯作者:
R. Stevens;H. Clercx;D. Lohse
影响因子:
3.7
作者:
R. Stevens;D. Lohse;R. Verzicco
通讯作者:
R. Stevens;D. Lohse;R. Verzicco
DOI:
10.1016/0146-6291(77)90475-1
发表时间:
1977-05
期刊:
Deep Sea Research
影响因子:
--
作者:
B. Gebhart;J. Mollendorf
通讯作者:
B. Gebhart;J. Mollendorf
DOI:
10.1103/physreve.86.056311
发表时间:
2011-12
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
作者:
R. Stevens;H. Clercx;D. Lohse
通讯作者:
R. Stevens;H. Clercx;D. Lohse