The onset of natural convection and heat transfer correlation in horizontal fluid layer heated uniformly from below

被引：0
|
作者：
Min Chan Kim
Sin Kim
机构：
[1] Cheju National University,Department of Chemical Engineering
[2] Cheju National University,Department of Nuclear and Energy Engineering
来源：
KSME International Journal | 2001年 / 15卷
关键词：
Buoyancy Effect; Stability Analysis; Heat Transfer Correlation; Propagation Theory;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The critical condition of the onset of buoyancy-driven convective motion of uniformly heated horizontal fluid layer was analysed by the propagation theory which transforms the disturbance quantities similarly. The dimensionless critical time,τc, is obtained as a function of the Rayleigh number and the Prandtl number. Based on the stability criteria and the boundary-layer instability model, a new heat transfer correlation which can cover whole range of Rayleigh number was derived. Our theoretical results predict the experimental results quite reasonably.
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页码：1451 / 1460
页数：9
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