Conjugate natural convection cooling of protruding heat sources mounted on a substrate placed inside an enclosure: a parametric study

Madhavan, P. N.; Sastri, V. M. K.

doi:10.1016/s0045-7825(99)00147-4

Cited by 17 publications

(7 citation statements)

References 24 publications

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“…Substituting Eq. (16) in (3) and 4with some manipulation and neglection of some terms which are now not important, the final linear system of equations would present this expression.…”

Section: Problem Formulationmentioning

confidence: 99%

Combined free and forced convection in an inclined channel with discrete heat sources

Guimarães

Menon

2008

International Communications in Heat and Mass Transfer

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It is studied in this work the mixed convection in an inclined rectangular channel. Three constant heat sources q' with finite lengths are flush mounted on the bottom surface of a channel, while the remaining part of this surface is kept isolated. The upper wall is cooled at a constant cold temperature T c. At the inlet, the flow has constant velocity U o and temperature T o profiles. The Reynolds number, the Grashof number, and the channel inclination angle are ranged as follows: 1 ≤ Re ≤ 1000, 10 3 ≤ Gr ≤10 5 , e 0° ≤ γ ≤ 90°, respectively. The system of the governing equations is solved using the finite element method with the Penalty formulation on the pressure terms and the Petrov-Galerkin perturbations on the convective terms. Three comparisons are carried out to validate the computational code. It is observed that the inclination angle has a stronger influence on the flow and heat transfer for low Reynolds numbers, especially when it is between 0° and 45°. The cases which present the lowest temperature distributions on the modules are those where the inclination angles are 45° and 90° with little difference between them. The case where Gr = 10 5 and Re = 1000 is an exception where γ = 0° is the best channel inclination.

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“…Substituting Eq. (16) in (3) and 4with some manipulation and neglection of some terms which are now not important, the final linear system of equations would present this expression.…”

Section: Problem Formulationmentioning

confidence: 99%

Combined free and forced convection in an inclined channel with discrete heat sources

Guimarães

Menon

2008

International Communications in Heat and Mass Transfer

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“…Concerning the thermal performance of the PBGA=PCB package, which is very important in the thermal design of package systems [17], a thermal resistance R is defined as follows by the maximum temperature rise on the silicon chip of the PBGA=PCB package:…”

Section: Heat Dissipation From a Plastic Ball Grid Array Packagementioning

confidence: 99%

Numerical Simulation of Heat Dissipation From a Plastic Ball Grid Array Package in a Thin

Peng

Ishizuka

2004

Numerical Heat Transfer, Part A: Applications

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This article concerns the numerical simulation method of heat transfer in a compact system box housing the assembly of a 672-pin plastic ball grid array (PBGA) package and a printed circuit board (PCB). A computational model for the PBGA=PCB assembly was developed to account for complex phenomena of three-dimensional heat and fluid flow, and conjugate heat transfer in tiny package components. Simulation results for a sample parameter set were compared with experimental data, and their agreement was confirmed. Then, the modeling approach was applied to a wide range of the parameter domain and effects of some operative and geometric parameters were investigated.

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“…A crucial challenge for scientists is the conjugate heat exchange in cavities of various configurations with heating elements [6][7][8][9][10] to try to intensify the heat removal from the heaters. Thus, Joshi et al [6] have examined conjugate natural convection in a closed square cavity having a local heater inside the heat-conducting substrate in the middle part of the region.…”

Section: Introductionmentioning

confidence: 99%

“…The reduction of the maximum heated surface temperature has been observed in the case of low and moderate thermal conductivity ratios. Madhavan and Sastri [7] have numerically investigated the conjugate natural convective heat transfer in the closed cavity. Three heating elements have been located on the heat-conducting substrate, and the distance between the heaters has been varied.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Conjugate Natural Convection in a Cavity with a Local Heater by the Lattice Boltzmann Method

Gibanov

Sheremet

2021

Fluids

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A numerical study of conjugate thermogravitational convection in a closed cavity with a local heater of square or triangular shape placed on a heat-conducting substrate using the double distribution function of the lattice Boltzmann method has been carried out. The side walls of the research area are maintained at a constant minimum temperature. The influence of the geometric shape of the heating element, the Rayleigh number, and the material of the heat-removing substrate on the thermohydrodynamic parameters has been studied. As a result of the research, the joint effect of these mentioned parameters on the efficiency of heat removal from the heater surface has been established. It has been found that a rise of the bottom wall thermal conductivity causes an increase in the average Nusselt number at the heater surface.

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Conjugate natural convection cooling of protruding heat sources mounted on a substrate placed inside an enclosure: a parametric study

Cited by 17 publications

References 24 publications

Combined free and forced convection in an inclined channel with discrete heat sources

Combined free and forced convection in an inclined channel with discrete heat sources

Numerical Simulation of Heat Dissipation From a Plastic Ball Grid Array Package in a Thin

Numerical Investigation of Conjugate Natural Convection in a Cavity with a Local Heater by the Lattice Boltzmann Method

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