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
TLDR
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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Transient natural convection flows around a thin fin on the sidewall of a differentially heated cavity
TL;DR: In this article, a scaling analysis of a thin fin on the sidewall of a differentially heated cavity, which includes a lower intrusion under the fin, a starting plume bypassing the fin and a thermal flow entrained into the vertical thermal boundary layer downstream of the fin in a typical case, is investigated.
Journal ArticleDOI
An experimental study of the unsteady thermal flow around a thin fin on a sidewall of a differentially heated cavity
TL;DR: In this paper, the unsteady thermal flow around a thin fin on a sidewall of a differentially heated cavity is visualized using a shadowgraph technique and measured using fast-response thermistors.
Journal ArticleDOI
Radiation‐natural convection interactions in partitioned cavities
A. Mezrhab,L. Bchir +1 more
TL;DR: In this paper, the authors investigated the heat transfer by radiation and natural convection in a two-dimensional, air-filled square enclosure with a vertical partition of finite thickness and varying height in the laminar regime.
Journal ArticleDOI
Heat transfer—a review of 1994 literature
E. R. G. Eckert,Richard J Goldstein,W. E. Ibele,Suhas V. Patankar,Terrence W. Simon,Paul J Strykowski,Kumar K. Tamma,Thomas H. Kuehn,Avram Bar-Cohen,Joachim Heberlein,D.L. Hofeldt,Jane H. Davidson,John C. Bischof,Francis A Kulacki +13 more
Journal ArticleDOI
Analysis of radiation–natural convection in a divided enclosure using the lattice Boltzmann method
TL;DR: In this article, a numerical hybrid lattice-Boltzmann equation finite difference was used to study the radiation-natural convection phenomena in a square cavity, differentially heated, with partition of finite thickness and varying height located vertically at the center of the cavity.
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.