Numerical simulation of three-dimensional natural convection in a cubic enclosure induced by an isothermally-heated circular cylinder at different inclinations
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- 作者：Basma Souayeh ; basma.souayeh@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Nader Ben-Cheikh ; Brahim Ben-Beya
- 关键词：Three-dimensional natural convection ; Heat transfer ; Low-temperature cubical enclosure ; High-temperature inner cylinder ; Inclination angle ; Correlations
- 刊名：International Journal of Thermal Sciences
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：110
- 期：Complete
- 页码：325-339
- 全文大小：7689 K
文摘
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Three-dimensional numerical simulations were conducted for natural convection phenomena.
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Occurrence of instabilities and bifurcation phenomena appears for Ra > 107 for inclinations other than 90°.
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Specific Rayleigh number and inclination angle providing an optimal heat transfer through the cylinder and lateral walls of the cuboid are determined.
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Correlations of Average Nusselt number through the lateral walls of the cuboid and the cylinder are established.