Natural convection in differentially heated and partially divided square cavities with internal heat generation

Öztop, Hakan F.; Bilgen, E.

doi:10.1016/j.ijheatfluidflow.2005.11.003

Cited by 100 publications

(56 citation statements)

References 12 publications

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“…Free convection in partitioned spaces is of particular interest in many engineering applications as noted by [1][2][3][4][5][6][7]. Hence, a great deal of information is available on heat and fluid flow through such enclosures as reviewed by Bejan [8].…”

Section: Introductionmentioning

confidence: 99%

“…Using a Laser Doppler Anemometer, turbulent natural convection of air in a partitioned cavity with differentially heated vertical and conducting horizontal walls was studied in [3]. On the other hand, dealing with laminar free convection in a differentially heated, partitioned, square cavity filled with a heat-generating fluid, Oztop and Bilgen [6] concluded that depending on the ratio of the internal/external Rayleigh number, there are two distinct regimes. Also they noted that the flow field will be adapted due to the presence of partial dividers while heat transfer is expected to reduce when this Ra ratio is from 10 to 100.…”

Section: Introductionmentioning

confidence: 99%

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Entropy generation for natural convection by heated partitions in a cavity

Famouri

Hooman

2008

International Communications in Heat and Mass Transfer

118

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Entropy generation for natural convection in a partitioned cavity, with adiabatic horizontal and isothermally cooled vertical walls, is studied numerically by both a FORTRAN code and the commercially available CFD-ACE software. Effects of the Rayleigh number, the position of the heated partition, and the dimensionless temperature difference on the local and average entropy generation rate are investigated. Proper scale analysis of the problem showed that, while fluid friction term has nearly no contribution to entropy production, the heat transfer irreversibility increases monotonically with the Nusselt number and the dimensionless temperature difference.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Entropy generation for natural convection by heated partitions in a cavity

Famouri

Hooman

2008

International Communications in Heat and Mass Transfer

118

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“…As shown in the literature, the natural convection in differentially heated cavities with adiabatic partition or heat generating body becomes a classical research problem extensively studied by many authors [6][7][8][9][10][11][12][13] in the main idea that these kinds of obstacles would change the flow and the heat transfer characteristics by many ways.…”

Section: Introductionmentioning

confidence: 99%

Impact of Square Fuel Assemblies Arrangement on Fluid Flow and Heat Transfer Enhancement inside Water Filled Enclosures

Ragui

Boutra

Benkahla

2016

ILCPA

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Abstract. Through this paper, the hydrodynamic and thermal characteristics of a Newtonian fluid within a square cold enclosure containing four inner heaters, arranged in different manners, are numerically investigated. To do so, a developed computer code based on the finite volume method and the SIMPLER algorithm is used. The validity of the latter was ascertained after the comparison between the obtained results and the experimental and numerical ones already available in the literature. To make clear the effect of pertinent parameters such the Rayleigh number and the distance between these heaters, the phenomenon was reported by means of Streamlines, Isotherm plots, velocity and temperature profiles, with a special attention to the local and average Nusselt number evolution. As shown in the latter, taking into account the heaters' arrangement into the enclosure leads to a significant improvement of the overall transfer. Consequently, powerful correlations predicting the heat transfer ratio into the cold square as a function of the heaters' disposition are proposed which predict within ±1% the numerical results.

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“…However, from application point of view, recent studies have shown that for fluid flows involving exothermic/ endothermic reactions, fire and combustion; the effect of internal heat generation cannot be neglected [6][7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

A Reactive Hydromagnetic Internal Heat Generating Fluid Flow Through a Channel

Hassan¹,

Gbadeyan²

2015

IJHT

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This paper investigates the analytical study of the temperature fluid distribution in a one-dimensional fluid flow under a magnetic field. It studies the effect of internal heat generation on the entropy generation in an exothermic reactive hydromagnetic fluid flow under Arrhenius kinetics. The fluid is assumed to be incompressible and electrically conducting flowing steadily through a channel with isothermal wall temperature. The solution is obtained taking into account a supplementary term in energy equation due to internal heat generation using the traditional perturbation method. Thermophysical aspects of the flow are presented and discussed.

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Natural convection in differentially heated and partially divided square cavities with internal heat generation

Cited by 100 publications

References 12 publications

Entropy generation for natural convection by heated partitions in a cavity

Entropy generation for natural convection by heated partitions in a cavity

Impact of Square Fuel Assemblies Arrangement on Fluid Flow and Heat Transfer Enhancement inside Water Filled Enclosures

A Reactive Hydromagnetic Internal Heat Generating Fluid Flow Through a Channel

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