High Prandtl number effect on Rayleigh–Bénard convection heat transfer at high Rayleigh number

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• 作者：Li Ma ; Jing Li ; Shui Ji ; Huajian Chang
• 刊名：Heat and Mass Transfer
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：53
• 期：2
• 页码：705-709
• 全文大小：<len>
• 刊物类别：Engineering
• 刊物主题：Engineering Thermodynamics, Heat and Mass Transfer; Industrial Chemistry/Chemical Engineering; Thermodynamics;
• 出版者：Springer Berlin Heidelberg
• ISSN：1432-1181
• 卷排序：53

文摘

This paper represents results of the Rayleigh–Bénard convection heat transfer in silicon oil confined by two horizontal plates, heated from below, and cooled from above. The Prandtl numbers considered as 100–10,000 corresponding to three types of silicon oil. The experiments covered a range of Rayleigh numbers from 2.14·109 to 2.27·1013. The data points that the Nusselt number dependents on the Rayleigh number, which is asymptotic to a 0.248 power. Furthermore, the experiment results can fit the data in low Rayleigh number well.