Entropy analysis in single phase nanofluid in square enclosure under effectiveness of inclined magnetic field by executing finite element simulations

Bilal, S.; Shah, Imtiaz Ali; Marzougui, Soumaya; Ali, Farhat

doi:10.1016/j.geoen.2023.211483

Cited by 11 publications

(3 citation statements)

References 39 publications

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“…The work of Marzougui et al (2022) investigated the generated entropy due to mixed convection of a nanofluid in a cavity; it was mentioned that while raising the magnetic field’s intensity the total entropy seems to decrease. These findings are supported by the outcomes of Bilal et al (2023) who found that the velocity of the nanofluid decrements with the increase in Hartmann number, hence, less interactions occurs in the cavity which leads to a drop in the total irreversibilities. In a more recent study (Alqaed et al , 2023), the lattice Boltzmann approach was used in conjunction with a FORTRAN code to estimate the frictional and thermal entropy produced through a rectangular enclosure filled with a nanofluid and exposed to the force of a magnetic field.…”

Section: Introductionsupporting

confidence: 67%

Hybrid-nanofluid magneto-convective flow and porous media contribution to entropy generation

Mebarek-Oudina,

Chabani,

Vaidya

et al. 2024

HFF

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Purpose This paper aims to present a numerical study that investigates the flow of MgO-Al2O3/water hybrid nanofluid inside a porous elliptical-shaped cavity, in which we aim to examine the performance of this thermal system when exposed to a magnetic field via heat transfer features and entropy generation. Design/methodology/approach The configuration consists of the hybrid nanofluid out layered by a cold ellipse while it surrounds a non-square heated obstacle; the thermal structure is under the influence of a horizontal magnetic field. This problem is implemented in COMSOL multiphysics, which solves the related equations described by the “Darcy-Forchheimer-Brinkman” model through the finite element method. Findings The results illustrated as streamlines, isotherms and average Nusselt number, along with the entropy production, are given as functions of: the volume fraction, and shape factor to assess the behaviour of the properties of the nanoparticles. Darcy number and porosity to designate the impact of the porous features of the enclosure, and finally the strength of the magnetic induction described as Hartmann number. The outcomes show the increased pattern of the thermal and dynamical behaviour of the hybrid nanofluid when augmenting the concentration, shape factor, porosity and Darcy number; however, it also engenders increased formations of irreversibilities in the system that were revealed to enhance with the permeability and the great properties of the nanofluid. Nevertheless, this thermal enhanced pattern is shown to degrade with strong Hartmann values, which also reduced both thermal and viscous entropies. Therefore, it is advised to minimize the magnetic influence to promote better heat exchange. Originality/value The investigation of irreversibilities in nanofluids heat transfer is an important topic of research with practical implications for the design and optimization of heat transfer systems. The study’s findings can help improve the performance and efficiency of these systems, as well as contribute to the development of sustainable energy technologies. The study also offers an intriguing approach that evaluates entropy growth in this unusual configuration with several parameters, which has the potential to transform our understanding of complicated fluid dynamics and thermodynamic processes, and at the end obtain the best thermal configuration possible.

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Section: Introductionsupporting

confidence: 67%

Hybrid-nanofluid magneto-convective flow and porous media contribution to entropy generation

Mebarek-Oudina,

Chabani,

Vaidya

et al. 2024

HFF

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“…The decrease in magnetization as a function of temperature led to an increase in the magnetic entropy (eq. (1) ) [ [63] , [64] , [65] ] :

…”

Section: Resultsmentioning

confidence: 99%

A study of the magnetic properties of LaNi5 and their effect on hydrogen desorption under the action of a magnetostatic field

Belkhiria,

Briki,

Dhaou

et al. 2023

Heliyon

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“…Finally, the appropriate initial and boundary conditions are applied, and the large matrix is solved using CFD software COMSOL Multiphysics 6.1. The reliability and accuracy of this CFD software are addressed in the previous literature [ [43] , [44] , [45] , [46] ].…”

Section: Numerical Procedures and Mesh Generationmentioning

confidence: 99%

Multi-scaling analysis of turbulent boundary layers over an isothermally heated flat plate with zero pressure gradient

Shuvo,

Mahmud,

Saha

2023

Heliyon

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Entropy analysis in single phase nanofluid in square enclosure under effectiveness of inclined magnetic field by executing finite element simulations

Cited by 11 publications

References 39 publications

Hybrid-nanofluid magneto-convective flow and porous media contribution to entropy generation

Hybrid-nanofluid magneto-convective flow and porous media contribution to entropy generation

A study of the magnetic properties of LaNi5 and their effect on hydrogen desorption under the action of a magnetostatic field

Multi-scaling analysis of turbulent boundary layers over an isothermally heated flat plate with zero pressure gradient

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