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Journal ArticleDOI

Studies on Three-Dimensional Mixed Convection with Surface Radiation in a Rectangular Channel with Discrete Heat Sources

TL;DR: The flow behavior and heat transfer characteristics of conjugate heat transfer under mixed convection for a three-dimensional laminar flow in a rectangular channel with six protruding heat sources were studied in this article.
Abstract: The flow behavior and heat transfer characteristics of conjugate heat transfer under mixed convection for a three-dimensional laminar flow in a rectangular channel with six protruding heat sources,...
Citations
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01 Jan 2003
TL;DR: In this article, the effects of the spatial arrangement of heat sources, the thermal conductivity ratio of the bottom plate material to air, and the Reynolds numbers on the overall and local heat transfer in a rectangular duct with two discrete flush-mounted heat sources were evaluated.
Abstract: Three-dimensional conjugate heat transfer in a rectangular duct with two discrete flush-mounted heat sources has been studied numerically in the context of cooling of electronic equipments. The Grashof number is fixed as 10 6 and the working fluid is taken as air The effects of the spatial arrangement of heat sources, the thermal conductivity ratio of the bottom plate material to air, and the Reynolds numbers on the overall and local heat transfer in the duct are evaluated. The magnitudes of the conduction and the convection transport are compared for different parametric combinations. Of particular interest are the transverse variation in the flow, temperature and heat transfer, the interaction between the heat sources, and the effects of conjugate transport

23 citations

Journal ArticleDOI
TL;DR: In this paper, the optimum heat generation ratio among discrete heat sources generating different amounts of heat in order to mitigate the hot spot was determined by following the constructal design method, where the average and total heat sources' heat generation rates were kept equal for every examined cases.

10 citations

Journal ArticleDOI
TL;DR: In this paper, the effects of emissivity, angular velocity and bottom wall thickness have been illustrated using the flow rate, average heater temperature, mean convective and radiative Nusselt numbers.

4 citations

Journal ArticleDOI
15 Sep 2019
TL;DR: 1 Consiglio Nazionale delle Ricerche, Istituto di Tecnologie Avanzate per l’Energia “Nicola Giordano”, salita S.p.A., via Senatore Simonetta 26/D – 20867 Caponago (MB), Italy.
Abstract: 1 Consiglio Nazionale delle Ricerche, Istituto di Tecnologie Avanzate per l’Energia “Nicola Giordano”, salita S. Lucia sopra Contesse, 5 98126 Messina, Italy 2 Dipartimento di Ingegneria, Università degli Studi di Palermo, Viale delle Scienze Ed. 8 90128 Palermo, Italy 3 Meridionale Impianti S.p.A., via Senatore Simonetta 26/D – 20867 Caponago (MB), Italy 4 Power Evolution S.r.L, Bivio Aspro Z.I. Piano Tavola – 95032 Belpasso (CT), Italy

2 citations

References
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Journal ArticleDOI
TL;DR: In this paper, a numerical simulation of forced convective, incompressible flow in a channel with an array of heated obstacles attached to one wall is presented, and three levels of Nusselt numbers are emphasized in this systematic analysis: local distributions along the obstacle exposed faces, mean values for individual faces, and overall obstacle mean values.

120 citations


"Studies on Three-Dimensional Mixed ..." refers background in this paper

  • ...Young and Vafai [6] carried out numerical studies on the conjugate heat transfer phenomena under forced convection from an array of protruding heat sources mounted on the lower wall of a 2-D rectangular horizontal channel....

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  • ...Young and Vafai [6] carried out numerical studies on the conjugate heat transfer phenomena under forced convection from an array of protruding heat sources mounted on the lower wall of a 2-...

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Journal ArticleDOI
TL;DR: In this article, the effects of Reynolds and Grashof numbers on these numbers were investigated and the effect of the buoyancy affected secondary flow and the onset of instability have been discussed.

51 citations


Additional excerpts

  • ...[9] conducted experiments to study the mixed convection heat transfer from 64 heat sources flush mounted on the...

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Journal ArticleDOI
TL;DR: In this paper, a numerical study of laminar mixed-convection heat transfer to air from two identical protruding heat sources, which simulate electronic components, located in a two-dimensional horizontal channel, is presented.

43 citations


"Studies on Three-Dimensional Mixed ..." refers background in this paper

  • ...Hamouche and Bessaih [11] presented their study on 2-D mixed convection heat transfer from two protruding heat sources mounted on the bottom wall of a horizontal rectangular channel....

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  • ...Hamouche and Bessaih [11] presented their study on 2-...

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Journal ArticleDOI
TL;DR: In this paper, a numerical investigation was conducted on the heat transfer from a uniformly powered strip source of heat located on the surface of a two-dimensional conducting substrate, where upper and lower surfaces of the substrate are cooled by forced laminar flow that is twodimensional, steady and with constant properties.

41 citations

Journal ArticleDOI
TL;DR: In this paper, an experimental and numerical study has been carried out in order to investigate mixed and natural convection heat transfer in a two-dimensional enclosure, where a discrete isothermal heat source is located at one of the vertical walls and two ventilation ports are at the bottom and on top of the opposite wall.
Abstract: An experimental and numerical study has been carried out in order to investigate mixed and natural convection heat transfer in a two-dimensional enclosure. A discrete isothermal heat source is located at one of the vertical walls. Also, two ventilation ports are at the bottom and on top of the opposite wall. A forced flow condition was imposed by providing an inlet of air at the bottom port. A Mach–Zehnder interferometer was used to visualize the temperature field within the enclosure and to determine the local and average heat transfer characteristics of the heat source. Five heater positions on the vertical wall and different Rayleigh numbers (4.5 × 105 to 1.15 × 106) and Reynolds numbers (120 to 1600) were considered in the experiments. A finite volume code has been developed based on the SIMPLE algorithm and hybrid discretization scheme for the numerical study. It is observed that the interaction of natural convection with the forced flow leads to various flow fields depending on the Richardson number...

27 citations


"Studies on Three-Dimensional Mixed ..." refers methods in this paper

  • ...[15] conducted experiments and performed numerical analysis to study the heat transfer characteristics from a discrete heat source...

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