Numerical study of mixed convection inside a three-dimensional ventilated cavity in the presence of an isothermal heating block

Doghmi, Hicham; Abourida, Btissam; Belarche, Lahoucin; Sannad, Mohamed; Ouzaouit, Meriem

doi:10.18280/ijht.360209

Cited by 16 publications

(6 citation statements)

References 23 publications

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“…[25]studied the two-dimensional ventilated rectangular cavity for various inlets and outlets using the finite element method. [26]three-dimensional mixed convection in a Ventilated cavity for different locations of the inlet and outlet ports at various Reynolds and Richardson numbers.…”

Section: Introductionmentioning

confidence: 99%

Effect of the position of the hot source on mixed convection in a rectangular cavity

Sereir

Missoum

MEBARKI

et al. 2022

Journal of Thermal Engineering

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This work presents a study by numerical simulation of mixed convection in a rectangular cavity with a sinusoidal temperature imposed on the right vertical wall while the other wall on the left is kept at a cold temperature. The upper and lower walls are thermally insulated, the inlet and outlet ports are respectively located on the hot wall to the bottom and on the top to the left. The enclosure represents a practical system such as an air-cooled electronic device, the heat source represents a radiator or an electronic component located in three different positions towards the left side at the bottom, the center and towards the right side at the top in such an enclosure. All calculations are made for a range of Richardson number from 0 to 10 and Reynolds numbers from 50 to 200. The influence of Richardson number, the position of the heat source and the influence of amplitude and phase deviation of the temperature imposed on the Nusselt number on the hot surface is studied. The results are presented in the form of streamlines and isotherms graphs as well as the variation in maximum temperature and mean Nusselt number under different conditions. The numerical resolution of the governing equations is obtained using the software of Multiphysics Comsol based on the finite element method.

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Section: Introductionmentioning

confidence: 99%

Effect of the position of the hot source on mixed convection in a rectangular cavity

Sereir

Missoum

MEBARKI

et al. 2022

Journal of Thermal Engineering

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“…Benachour et al [6] have numerically studied laminar mixed convection in a ventilated rectangular cavity subjected to a constant heat source inside. Hicham et al [7] worked on a numerical study of heat transfer by mixed convection in an isothermal heating source in a three-dimensional ventilated cavity with different inlet and…”

Section: …………………………………………………………………………………………………… Introduction:-mentioning

confidence: 99%

CFD Modeling of the Optimization of a Ventilation System in Asquare Enclosure With Two Inlets

Thiam¹,

Drame²,

Diouf³

et al. 2022

IJAR

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In this article, we have numerically studied the phenomenon of laminar mixed convection in a ventilated square cavity. The vertical walls of the cavity are subjected to a temperature gradient while the horizontal walls are constrained as adiabatic. We used the finite volume method to discretize the system of non-dimensional equations and a purely implicit scheme for the temporal discretization. The results were presented in the form of hydrodynamic and thermal fields for different values â€‹â€‹of the Richardson number with the number of Reynolds constant. We found that the increase of the Richardson number with a fixed Reynolds number Re=100 allows us to visualize the evolution of the system and to appreciate the efficiency of the bottom ventilation.

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“…Some parameters used in this investigation as the block size and percentage of Al2O3 particles and Ri (0.01-100). Doghmi et al [45] investigate 3D mixed convection in two configurations for different inlet and outlet locations with an isothermally heated block inside a ventilated cavity for 0<Ri<10 and 50<Re<100 using finite volume method.…”

Section: Introductionmentioning

confidence: 99%

Optimal Conditions of Natural and Mixed Convection in a Vented Rectangular Cavity with a Sinusoidal Heated Wall Inside with a Heated Solid Block

et al. 2021

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The present investigation deals with the natural, mixed and forced convection in a vented rectangular cavity having a sinusoidal heated vertical wall with a conducting solid block placed at one of the nine positions. The objective is to analyze numerically using finite element method the effects of the following parameters: inlet, outlet positions, solid square positions, thermal coefficient λ, amplitude ratio ɛ, phase deviation ϕ and the solid square size on the thermo-convective flows. The Richardson number is varied from 0 to 40, the Reynolds and Prandtl numbers are fixed respectively at 100 and 0.71. To quantify the heat transfer of the solid block and to get closer to real conditions, we have developed a modification based on the evaluation of the Nusselt number using the average temperature in the cavity, unlike previous works which used the input temperature. As results, the sinusoidal temperature at the right wall gives higher heat transfer enhancement. The variation of the phase deviation and amplitude ratio have a slightly effect on the average fluid temperature and average Nusselt at the right wall and at the square solid.

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Numerical study of mixed convection inside a three-dimensional ventilated cavity in the presence of an isothermal heating block

Cited by 16 publications

References 23 publications

Effect of the position of the hot source on mixed convection in a rectangular cavity

Effect of the position of the hot source on mixed convection in a rectangular cavity

CFD Modeling of the Optimization of a Ventilation System in Asquare Enclosure With Two Inlets

Optimal Conditions of Natural and Mixed Convection in a Vented Rectangular Cavity with a Sinusoidal Heated Wall Inside with a Heated Solid Block

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