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Journal of Shanghai University >

2012 , Vol. 18 >Issue 3: 293 - 298

DOI: https://doi.org/10.3969/j.issn.1007-2861.2012.03.015

Mathematics.Physics and Chemistry

Aspect Ratio Dependence of Heat Transport by Turbulent RayleighBénard Convection in Rectangular Cells

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  • (Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China)

Online published: 2012-06-30

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Abstract

This paper reports highprecision measurements of the Nusselt number Nu as a function of the Rayleigh number Ra, which in waterfilled rectangular RayleighBénard (RB) convection cells of aspect ratio （Γx,Γy）=（1.00，0.30）, （2.00，0.60）, （4.00，1.20）, （7.25，2.18）, （14.29，4.29） and （20.84，6.25）, over the Rayleigh number range 5.0×105≤Ra≤5.6×1010 and the Prandtl number range 5.3≤Pr≤7.0. The results show that, unlike the situation in the cylindrical cells, the turbulent heat transport in rectangular cells is nearly independent of the cells’ aspect ratios.

Key words： aspect ratio; effect of finite conductivity; heat transport; RayleighBénard (RB); turbulent thermal convection

Cite this article

LI Chun-mei,LIU Bo-fang,ZHOU Quan,LU Zhi-ming,LIU Yu-lu . Aspect Ratio Dependence of Heat Transport by Turbulent RayleighBénard Convection in Rectangular Cells[J]. Journal of Shanghai University, 2012 , 18(3) : 293 -298 . DOI: 10.3969/j.issn.1007-2861.2012.03.015

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