Journal ArticleDOI
Numerical analysis of natural convection with surface radiation in a square enclosure
M. Akiyama,Q. P. Chong +1 more
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TLDR
In this article, the effect of surface radiation on the flow field, temperature distribution, and heat transfer is predicted, and it is shown that surface radiation significantly altered the temperature distribution and the flow patterns, especially at higher Rayleigh numbers.Abstract:
The interaction of natural convection with thermal radiation of gray surfaces in a square enclosure filled with air has been numerically investigated. The effect of radiation on the flow field, temperature distribution, and heat transfer is predicted. The result shows that surface radiation significantly altered the temperature distribution and the flow patterns, especially at higher Rayleigh numbers. The average convection Nusselt number increases with the increase of Ra. The presence of surface radiation can change the value of average convection Nusselt number, but only little variation can be observed with the increase of emissivity. The average radiative Nusselt number rises quickly with the increase of emissivity, and radiation heat transfer plays an important part in overall heat flux at larger emissivity. The correlation of entire average Nusselt number has also been discussed for evaluating heat transfer through the enclosure,read more
Citations
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Interaction Effects Between Surface Radiation and Turbulent Natural Convection in Square and Rectangular Enclosures
TL;DR: In this article, the effect of surface radiation with turbulent natural convection of a transparent medium in rectangular enclosures has been numerically analyzed, covering a wide range of Rayleigh number from 10 9 to 10 12 and aspect ratio from 1 to 200.
Journal ArticleDOI
Nusselt number for the natural convection and surface thermal radiation in a square tilted open cavity
TL;DR: In this article, the heat transfer by natural convection and surface thermal radiation in a tilted 2D open cavity is presented, and the results in the steady state are obtained for a Rayleigh range from 104 to 107 and for an inclination angles range of the cavity from 0° to 180°.
Journal ArticleDOI
Conjugate heat transfer by natural convection, conduction and radiation in open cavities
TL;DR: In this paper, the authors investigate conjugate heat transfer by natural convection, conduction and radiation in open cavities in which a uniform heat flux is applied to the inside surface of the solid wall facing the opening.
Journal ArticleDOI
Interaction between natural convection and radiation in a square cavity heated from below
TL;DR: In this article, the radiation effect of gray surfaces on multiple steady-state solutions obtained in a square enclosure filled with air has been investigated numerically, by a finite-difference procedure.
Journal ArticleDOI
Conjugate natural convection combined with surface thermal radiation in a three-dimensional enclosure with a heat source
TL;DR: In this paper, a numerical analysis of natural convection and surface thermal radiation in a cubical cavity having heat-conducting solid walls of finite thickness with a heat source located at the bottom of the cavity in conditions of convective heat exchange with an environment has been carried out.
References
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Book
Numerical heat transfer and fluid flow
TL;DR: In this article, the authors focus on heat and mass transfer, fluid flow, chemical reaction, and other related processes that occur in engineering equipment, the natural environment, and living organisms.
Book
Principles of heat transfer
TL;DR: In this paper, Kreith, Manglik, and Bohn present relevant and stimulating content in this fresh and comprehensive approach to heat transfer, acknowledging that in today's world classical mathematical solutions to Heat Transfer problems are often less influential than computational analysis.
Journal ArticleDOI
Natural convection and radiation in a square enclosure
TL;DR: In this paper, the effects of optical thickness and scattering on the flow and temperature fields and heat transfer rates of a radiating fluid in a square enclosure were studied numerically and the coupled momentum, energy, and radiative transfer equations were solved by an iterative procedure.
Journal ArticleDOI
Radiation-Natural Convection Interactions in Two-Dimensional Complex Enclosures
TL;DR: In this article, a numerical finite-difference study has been carried out for the two-dimensional radiation-natural convection interaction phenomena in square enclosures with equal vertical finite-thickness partitions located at the centers of the ceiling and floor.
Journal ArticleDOI
Laminar and Turbulent Natural Convection-Radiation Interactions in a Square Enclosure Filled with a Nongray Gas
Toru Fusegi,Bakhtier Farouk +1 more
TL;DR: In this article, a numerical investigation of the interaction of LAMINAR and turbulent natural convection and radiation in a differentially heated square enclosure was performed, where the Favre-averaged formulation was employed for analyzing turbulent flows together with a k-e model.