Thermal Analysis of Steady Simulation of Free Convection from Concentric Elliptical Annuli of a Horizontal Arrangement

Laidoudi, Houssem; Ameur, Houari; Sahebi, S. A. R.; Hoseinzadeh, Siamak

doi:10.1007/s13369-022-06717-5

Cited by 7 publications

(2 citation statements)

References 48 publications

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“…In addition to this, some geometric changes have been proposed and achieved for the purpose of evaluating thermal activity.) Some numerical studies focused on the evolution of thermal activity within systems of different geometries (Laidoudi and Bouzit, 2018;Laidoudi, 2020;Laidoudi and Bouzit, 2017c;Laidoudi et al, 2022a). These studies show the effect of many parameters on thermal transfer, but primarily on the geometry of the system.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Non-Newtonian Fluid in a Lid-Driven Chamber With Heated Bodies Subjected to a Uniform Magnetic Field

Anouar

2023

JSSCM

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Recent studies have attempted to find methods and techniques that enable the development of heat transfer within thermal transformers. For this purpose, this paper includes a numerical simulation of a non-Newtonian fluid inside a chamber with four hot bodies. The chamber is exposed to a magnetic field of constant and uniform intensity. Also, the upper wall of the chamber has a horizontal movement. The study is based on the quality of heat transfer between the heated parts of the chamber and the complex fluid under the influence of a set of criteria, namely Reynolds number (= 1 to 40); Hartmann number (= 0 to 100); power-law index (= 0.6 to 1.4) and Richardson number (0 to 100). The interpretation of the results is done by displaying the path-lines and isotherms distribution. Also, the amount of thermal transfer of the hot bodies is given in terms of the Nusselt number. The results showed that the positioning of the hot bodies plays an important role in heat transfer. Moreover, increasing the value of the power-law index makes the fluid stickier, which reflects its negative effect on heat transfer.

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Section: Introductionmentioning

confidence: 99%

Behavior of Non-Newtonian Fluid in a Lid-Driven Chamber With Heated Bodies Subjected to a Uniform Magnetic Field

Anouar

2023

JSSCM

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“…On other hand, some researchers studied the fluid quality and its effect on the thermal evolution of the system. Some of them used non-Newtonian fluids (Guendouci et al 2021;Laidoudi et al 2022b;Yigit et al 2017;Laidoudi et al 2020b;Matin et al 2013;Ramla et al 2022), while others exploited nanofluids in order to augment the thermal comportment (Garoosi et al 2014;Sheikholeslami et al 2015;Maneengam et al 2022;Laidoudi et al 2022c). In the end, it was understood that the type of fluid and its behavior relatively affect the thermal activity, and that this effect varies from one thermal system to another.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of the Nanofluid Natural Convection Flow in a Cpu Heat Sink Using Buongiorno Tow-Phase Model

Anouar¹,

Mokhefi²

2022

JSSCM

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In this paper, a numerical investigation using the finite element method on the cooling capacity of an electronic heat sink has been presented. This heat sink is intended for cooling applications of micro-computer CPUs. It deals with a parallelepipedal block with rectangular fins, filled with a nanofluid and crossed by four cylindrical pipes in which a cooling gas flows and dissipates the heat generated by the processor. Indeed, the cooling occurs by three transfers: the first one evacuates the heat from the processor towards the gas, the second one transfers this heat towards the nanofluid and the last one is cooled from the ambient air by means of the fins laterally arranged on the block. From this work, it has been planned to contribute to the study of the behavior of a nanofluid in the heat sink in the presence of a uniform magnetic field in order to enhance the operating and cooling performances. The effects of some control parameters have been highlighted on the hydrodynamic, thermal, and mass behavior of the nanofluid, namely: the Rayleigh number (103 â‰¤ Ra â‰¤ 105), the Hartmann number (0 â‰¤ Ha â‰¤ 100), the angle of inclination of the magnetic field (0 â‰¤ Î³ â‰¤ 90Â°) and the nanoparticles diameter (1 nm â‰¤ dp â‰¤ 10 nm). On the other hand, a new fin design has been proposed in this study allowing the enhancement of the heat exchange rate with ambient medium. The studied phenomenon is governed by the equations of the two-phase nanofluid model proposed by Buongiorno and which describe the following balances: mass, momentum, energy and nanoparticles. The system of partial differential equations with initial-boundary conditions has been solved by the finite element method. After performing a mesh independence check and validating with previous papers, the results of the investigation were presented. They showed that the application of a magnetic field significantly reduces the rate of heat exchange. However, increasing the angle of inclination of this field promotes convective heat transfer. Moreover, the use of zigzag fins improves the cooling rate by about 4% for amplitude of 0.05 compared to the standard configuration.

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Natural convection from a horizontal cylinder placed in a square enclosure: CFD simulations

Mahmood,

Ibrahim,

Kamilxy

et al. 2023

AIP Conference Proceedings

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Thermal Analysis of Steady Simulation of Free Convection from Concentric Elliptical Annuli of a Horizontal Arrangement

Cited by 7 publications

References 48 publications

Behavior of Non-Newtonian Fluid in a Lid-Driven Chamber With Heated Bodies Subjected to a Uniform Magnetic Field

Behavior of Non-Newtonian Fluid in a Lid-Driven Chamber With Heated Bodies Subjected to a Uniform Magnetic Field

Numerical Investigation of the Nanofluid Natural Convection Flow in a Cpu Heat Sink Using Buongiorno Tow-Phase Model

Natural convection from a horizontal cylinder placed in a square enclosure: CFD simulations

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