Journal ArticleDOI
Effect of thick horizontal partial partition attached to one of the active walls of a differentially heated square cavity
A. Nag,A. Sarkar,V.M.K. Sastri +2 more
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In this paper, the effect of a partial horizontal partition plate of finite thickness attached to the heated vertical wall of a differentially heated square cavity has been studied numerically using the finite element method.Abstract:
The effect of a partial horizontal partition plate of finite thickness, attached to the heated vertical wall of a differentially heated square cavity, has been studied numerically using the finite element method. The partition thickness is varied from 0.5% of the height of the cavity to 10%. The partition is considered to be located at the middle of the hot wall of a width equivalent to 20% of the cavity width. It is observed that as the partition thickness is reduced, heat transfer across the cavity decreases at first, until a critical thickness of the partition plate is reached. Beyond this value, heat transfer increases as the thickness of the partition is further reduced. Streamline maps are found to be notably sensitive to the partition thickness. The effect of conductivity of the partition material on heat transfer is also studied. Except for material with poor thermal properties, conductivity of the partition is observed to have a negligible effect on heat transfer.read more
Citations
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Journal ArticleDOI
Numerical and experimental investigation of multi-mode heat transfer in a square cavity with and without triangular fins
TL;DR: In this paper, the effects of pertinent parameters on fluid flow and heat transfer characteristics are studied in a differentially heated cavity with/without triangular fins, assuming laminar flow, using the commercial software FLUENT.
Proceedings ArticleDOI
Heat Transfer Increase With Thin Fins InThree Dimensional Enclosures
R. L. Frederick,S. Samper +1 more
TL;DR: In this article, the authors investigated the performance of fin-assisted heat transfer in cavities with low aspect ratio and showed that fin-based heat transfer can significantly improve the performance.
Journal ArticleDOI
Effect of Al2O3/water nanofluid on Conjugate Free Convection in a Baffle Attached Square Enclosure
TL;DR: In this article, the effect of Rayleigh number on conjugate free convection heat transfer of Al2O3/water nanofluid inside a differentially heated square enclosure with a baffle attached to its hot wall has been analyzed.
Book ChapterDOI
Design of Macro-rough Surface and Its Influence on Side Wall Heated Square Enclosure
TL;DR: In this paper, a square enclosure with and without macro-roughness has been modelled by maintaining top and bottom walls as adiabatic, and the fluid flow and heat transfer characteristics have been explained with the help of velocity and temperature contours.
Book ChapterDOI
Enhancement of Laminar Natural Convection Heat Transfer in Horizontal Annuli Using Two Fins
TL;DR: The optimization of heat transfer in a finned annular cavity has been studied extensively in recent decades as mentioned in this paper, and the results of this research are used in various industrial applications such as the cooling of nuclear reactors, electronic equipment, and solar collectors.
References
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Journal ArticleDOI
Natural convection of air in a square cavity: A bench mark numerical solution
TL;DR: In this paper, the authors used mesh refnement and extrapolation to obtain an accurate solution of the equations describing two-dimensional natural convection in a square cavity with differentially heated side walls.
Journal ArticleDOI
Natural convection in enclosures
TL;DR: In this paper, the complex nature of the natural convection phenomena in enclosures is discussed and the boundary value problem is formulated, assuming that the motion is 2D and steady, the fluid is incompressible and frictional heating is negligible, and the difference between the hot wall and cold wall temperatures is small relative to the absolute temperatures of the cold wall.
Journal ArticleDOI
Natural convection in a differentially heated square cavity with a horizontal partition plate on the hot wall
A. Nag,A. Sarkar,V.M.K. Sastri +2 more
Journal ArticleDOI
Natural convection heat transfer in enclosures with multiple vertical partitions
TL;DR: In this article, the boundary layer solution predicting the heat transfer rate is derived on the basis of the numerical results, and it is shown that the Nusselt number is inversely proportional (1 + N) where N is the number of partitions.
Journal ArticleDOI
Natural convection in a partially divided enclosure
Nienchuan N. Lin,Adrian Bejan +1 more
TL;DR: In this article, an experimental and analytical study of the phenomenon of heat transfer by natural convection in a rectangular enclosure fitted with an incomplete internal partition is presented. But the authors do not consider the effect of the aperture ratio h/H on both the heat transfer rate and flow pattern.