Natural Convection in Cubical Enclosures With Thermal Sources on Adjacent Vertical Walls

Frederick, Ramón L.; Berbakow, Ottavio

doi:10.1080/10407780252780199

Cited by 16 publications

(3 citation statements)

References 12 publications

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“…They investigated the effect of aspect ratio and inclination of the cavity on the heat transfer process. Other relevant papers which also deal with localized heated surfaces may be found in references [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Influence of thermal boundary conditions on natural convection in a square enclosure partially heated from below

Cheikh

Ben-Beya

Tong

2007

International Communications in Heat and Mass Transfer

104

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Section: Introductionmentioning

confidence: 99%

Influence of thermal boundary conditions on natural convection in a square enclosure partially heated from below

Cheikh

Ben-Beya

Tong

2007

International Communications in Heat and Mass Transfer

104

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“…Ju and Chen [14] have investigated natural convection in an enclosure with a discrete heater at the one of its vertical walls. Natural convection in an enclosure with thermal sources on its adjacent walls has been examined by Fredrick and Berbakow [15]. The partially cooled and heated enclosures have been the subject of the research by Turkoglu and Yucel [16].…”

Section: Introductionmentioning

confidence: 99%

A Differential Quadrature Solution of Natural Convection in an Enclosure with a Partial Partition

Öztuna

2007

Numerical Heat Transfer, Part A: Applications

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Natural convection in a partially divided enclosure has been examined numerically using a differential quadrature method. Governing equations for the flow and heat transfer have been constructed by the vorticity-stream function formulation and computational results have been obtained for the Rayleigh numbers, 10 4 , 10 5 , 10 6 , the locations of the partition, 0.2, 0.4, 0.6, 0.8, and the partition ratios, 0.25, 0.50, 0.75, 1.0. The results show that circulation strength, and therefore heat transfer, decreases considerably with increasing partition height especially for the higher values of the Rayleigh number. As the distance of the partition from the hot wall increases, first a decrease and then an increase is observed in the average Nusselt number for the low Rayleigh numbers and first an increase and then a decrease turns out for the high Rayleigh numbers. As for the average Nusselt number on the partition, first it shows a decreasing trend and then an increasing trend as the partition is distanced from the hot wall towards the cold wall. The increase in the partition height brings about significant increase in the average Nusselt number on the partition.

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“…His results indicated that Nusselt numbers became more than that computed for a side heated cavity at low values of Rayleigh number. Frederick and Berbakow [12] numerically studied the natural convection in a cubical enclosure with a hot source centered on a vertical wall and with an adjacent, fully cooled vertical wall. They concluded that the heat transfer had a weak dependent on the Rayleigh number.…”

Section: Introductionmentioning

confidence: 99%

Computational study of natural convection and entropy generation in 3-D cavity with active lateral walls

et al. 2020

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Numerical simulation of the natural convection and entropy generation in an airfilled cubical cavity with active lateral walls is performed in this work. Both the lateral front and right sidewalls are maintained at an isothermal cold temperature. While an isothermal hot temperature is applied for both the lateral back and left sidewalls. The upper and lower walls are kept adiabatic. Entropy generation rates due to the fluid friction and the heat transfer are simulated by using the Second law of thermodynamics. Results are illustrated for Rayleigh numbers varied from (10 3 ≤ Ra ≤ 10 6). It was shown that the increase in the Rayleigh number leads to increase the average Nusselt number and to decrease the Bejan number. Also, it was found that both, S th , and S tot , increase slightly with the increase in Rayleigh number until they reach (Ra = 10 5) and then begin to jump after this value. After (Ra = 10 5), the increase in both, S tot , and S fr , is greater than S th. Moreover, it was observed that iso-surfaces of S tot are similar to S th at (10 3 ≤ Ra ≤ 10 5), while they are similar to S fr at high Rayleigh number.

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Natural Convection in Cubical Enclosures With Thermal Sources on Adjacent Vertical Walls

Cited by 16 publications

References 12 publications

Influence of thermal boundary conditions on natural convection in a square enclosure partially heated from below

Influence of thermal boundary conditions on natural convection in a square enclosure partially heated from below

A Differential Quadrature Solution of Natural Convection in an Enclosure with a Partial Partition

Computational study of natural convection and entropy generation in 3-D cavity with active lateral walls

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