Numerical Analysis of the Magnetic Dipole Effect on a Radiative Ferromagnetic Liquid Flowing over a Porous Stretched Sheet

Dharmaiah, G.; Mebarek-Oudina, F.; Balamurugan, K. S.; Vedavathi, N.

doi:10.32604/fdmp.2023.030325

Cited by 28 publications

(3 citation statements)

References 44 publications

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“…The findings of both (Chamkha et al, 2019;Naseem et al, 2023;Dharmaiah et al, 2024) indicate the direct relationship the heat efficiency and porous features have, as augmenting the porous media and Darcy number will boost the Nusselt number and result in great heat exchange.…”

Section: Nomenclaturementioning

confidence: 96%

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: Nomenclaturementioning

confidence: 96%

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

Mebarek-Oudina,

Chabani,

Vaidya

et al. 2024

HFF

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“…In open enclosures, the effects FHMT, 2024 of parallel insulated baffles were examined by Palaniappan et al [32]. According to the literature, further activities related to this study are [33][34][35]. Asad et al [36] investigated the analytical modeling of the MHD boundary layer circulation of a chemically reacting upper convective Maxwell fluid via a vertical surface exposed to many stratifications with different characteristics.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis for Magneto-Convection Heat Transfer Performance in Vertical Wavy Surface Enclosure: Fin Size Impact

Fayz-Al-Asad,

Mebarek-Oudina,

Vaidya

et al. 2024

FHMT

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The goal of this paper is to represent a numerical study of magnetohydrodynamic mixed convection heat transfer in a lid-driven vertical wavy enclosure with a fin attached to the bottom wall. We use a finite element method based on Galerkin weighted residual (GWR) techniques to set up the appropriate governing equations for the present flow model. We have conducted a parametric investigation to examine the impact of Hartmann and Richardson numbers on the flow pattern and heat transmission features inside a wavy cavity. We graphically represent the numerical results, such as isotherms, streamlines, velocity profiles, local and mean Nusselt numbers, and average surface temperature. Comparisons between the results of this work and previously published work in a literature review have been produced to examine the reliability and consistency of the data. The different sizes of the fin surface significantly impact flow creation and temperature fields. Additionally, the long fin size is necessary to enhance the heat transfer rate on the right surface at large Richardson numbers and low Hartmann numbers. Fin surfaces can significantly increase the mixing of fluid inside the enclosure, which can mean reductions in reaction times and operating costs, along with increases in heat transfer and efficiency.

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“…Mohanty et al [ 22 ] performed a 2D analysis in an elliptical circular tube-based heat exchanger. Dharmaiah et al [ 23 ] numerically studied a magnetic dipole effect on a radiative ferromagnetic liquid. Li et al [ 24 ] investigated the heat transfer as well as frictional losses in an elliptical tube-based heat exchanger.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Enhancement Using Al2O3-MWCNT Hybrid-Nanofluid inside a Tube/Shell Heat Exchanger with Different Tube Shapes

Bouselsal,

Mebarek-Oudina,

Biswas

et al. 2023

Micromachines

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The high demand for compact heat exchangers has led researchers to develop high-quality and energy-efficient heat exchangers at a lower cost than conventional ones. To address this requirement, the present study focuses on improvements to the tube/shell heat exchanger to maximize the efficiency either by altering the tube’s geometrical shape and/or by adding nanoparticles in its heat transfer fluid. Water-based Al2O3-MWCNT hybrid nanofluid is utilized here as a heat transfer fluid. The fluid flows at a high temperature and constant velocity, and the tubes are maintained at a low temperature with various shapes of the tube. The involved transport equations are solved numerically by the finite-element-based computing tool. The results are presented using the streamlines, isotherms, entropy generation contours, and Nusselt number profiles for various nanoparticles volume fraction 0.01 ≤ φ ≤ 0.04 and Reynolds numbers 2400 ≤ Re ≤ 2700 for the different shaped tubes of the heat exchanger. The results indicate that the heat exchange rate is a growing function of the increasing nanoparticle concentration and velocity of the heat transfer fluid. The diamond-shaped tubes show a better geometric shape for obtaining the superior heat transfer of the heat exchanger. Heat transfer is further enhanced by using the hybrid nanofluid, and the enhancement goes up to 103.07% with a particle concentration of 2%. The corresponding entropy generation is also minimal with the diamond-shaped tubes. The outcome of the study is very significant in the industrial field and can solve many heat transfer problems.

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Numerical Analysis of the Magnetic Dipole Effect on a Radiative Ferromagnetic Liquid Flowing over a Porous Stretched Sheet

Cited by 28 publications

References 44 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

Finite Element Analysis for Magneto-Convection Heat Transfer Performance in Vertical Wavy Surface Enclosure: Fin Size Impact

Heat Transfer Enhancement Using Al2O3-MWCNT Hybrid-Nanofluid inside a Tube/Shell Heat Exchanger with Different Tube Shapes

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