Influence of aspect ratio on heat transfer in non-uniformly heated cylindrical fluid layers

21st Winter School on Continuous Media Mechanics

计算机技术

Evgrafova, A.^1 ; Sukhanovskii, A.^1

Institute of Continuous Media Mechanics, Academ.Korolyov 1, Perm

614013, Russia^1

关键词: Cylindrical containers;    Fluid layer;    Heat transfer process;    Rayleigh number;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/581/1/012007/pdf
DOI  :  10.1088/1757-899X/581/1/012007

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

In this paper experimental study of heat transfer processes in a cylindrical container non-homogeneously heated from below is presented. The heater has a circular form and was placed in the center of the vessel. The experiments were performed in the range of Rayleigh numbers from 4.4•106 to 1.2•107 and fixed Prandtl number (Pr = 67). Special attention was paid to the influence of the aspect ratio (the ratio of the height of the fluid layer to the diameter of the heater) on the flow structure and the intensification of heat transfer.