MHD effect on conjugate heat transfer in a nanofluid filled rectangular enclosure

Zahan, Ishrat; Nasrin, Rehena; Алим, М. А.

doi:10.15406/ipcse.2018.03.00085

Cited by 12 publications

(7 citation statements)

References 30 publications

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“…This study narrated the fundamental concepts of nanofluids and properties and the potential application and advantages of nanofluids in various sectors widely. Nasrin et al [30] , [31] performed MHD free/conjugate heat transfer in circular/arc/rectangular cavities filled with different nanofluids. Weheibi et al [32] analyzed the free convective temperature flow of nine different nanofluids, including various shapes of the nanoparticles within a trapezoidal enclosure.…”

Section: Introductionmentioning

confidence: 99%

Mathematical modeling of unsteady flow with uniform/non-uniform temperature and magnetic intensity in a half-moon shaped domain

Islam

Parveen

Nasrin

2022

Heliyon

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Section: Introductionmentioning

confidence: 99%

Mathematical modeling of unsteady flow with uniform/non-uniform temperature and magnetic intensity in a half-moon shaped domain

Islam

Parveen

Nasrin

2022

Heliyon

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“…Uddin [29] also studied the hydrodynamic natural convective temperature transport of Cu-H 2 O nanofluid in the semicircular enclosure. Zahan et al [30] performed the temperature transport in the chamber for the different parameters with magnetic effect. The outcome predicted that the performance of temperature flow diminishes with the higher Hartmann number.…”

Section: Introductionmentioning

confidence: 99%

Impact of Non-Uniform Periodic Magnetic Field on Unsteady Natural Convection Flow of Nanofluids in Square Enclosure

et al. 2022

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In this article, unsteady free convective heat transport of copper-water nanofluid within a square-shaped enclosure with the dominance of non-uniform horizontal periodic magnetic effect is investigated numerically. Various nanofluids are also used to investigate temperature performance. The Brownian movement of nano-sized particles is included in the present model. A sinusoidal function of the y coordinate is considered for the magnetic effect, which works as a non-uniform magnetic field. The left sidewall is warmed at a higher heat, whereas the right sidewall is cooled at a lower heat. The upper and bottom walls are insulated. For solving the governing non-linear partial differential equation, Galerkin weighted residual finite element method is devoted. Comparisons are made with previously published articles, and we found there to be excellent compliance. The influence of various physical parameters, namely, the volume fraction of nanoparticles, period of the non-uniform magnetic field, Rayleigh number, the shape and diameter of nanoparticles, and Hartmann number on the temperature transport and fluid flow are researched. The local and average Nusselt number is also calculated to investigate the impact of different parameters on the flow field. The results show the best performance of heat transport for the Fe3O4-water nanofluid than for other types of nanofluids. The heat transport rate increases 20.14% for Fe3O4-water nanofluid and 8.94% for TiO2-water nanofluid with 1% nanoparticles volume. The heat transportation rate enhances with additional nanoparticles into the base fluid whereas it decreases with the increase of Hartmann number and diameter of particles. A comparison study of uniform and non-uniform magnetic effects is performed, and a higher heat transfer rate is observed for a non-uniform magnetic effect compared to a uniform magnetic effect. Moreover, periods of magnetic effect and a nanoparticle’s Brownian movement significantly impacts the temperature transport and fluid flow. The solution reaches unsteady state to steady state within a very short time.

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“…This publication sparked a new research discipline and several works have shown that the nanoparticles, when they are dispersed uniformly in a base fluid, greatly increases their thermal conductivity. Hence, diverse numerical works evaluating the MHD natural convection of nanofluids are carried out and many nanofluids were treated (Ferhi et al , 2021; Djebali, 2020; Ahmed et al , 2018; Zahan et al , 2018; Teamah and El-Maghlany., 2012; Sheikholeslami et al , 2014; Belhaj and Ben-Beya., 2018b).…”

Section: Introductionmentioning

confidence: 99%

Thermal performance analysis of hybrid nanofluid natural convection in a square cavity containing an elliptical obstacle under variable magnetic field

Belhaj

Ben-Beya

2021

HFF

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Purpose This study aims to analyze entropy generation and magnetohydrodynamic (MHD) natural convection of hybrid nanofluid in a square cavity, with a heated elliptical block placed at the center, in presence of a periodic-variable magnetic field. Design/methodology/approach In this paper, simulations were performed with a FORTRAN home code. The numerical methodology used to solve Navier–Stokes, energy and entropy generation equations with corresponding boundary conditions, is essentially based on the finite volume method and full multigrid acceleration. Findings The cavity is filled with Ag–Tio2/Water hybrid nanofluid. The main objective of this investigation is to predict the effects of body’s size (6 cases), type of applied magnetic field (variable or uniform), the non-dimensional period number of the variable magnetic field (VMF) (0.2 ≤ Λ ≤ 0.8), the inclination angle of the VMF (0 ≤ χ ≤ 90), Rayleigh number (5 × 103 ≤ Ra ≥ 105) and Hartmann number (5 ≤ Ha ≥ 100) on thermal performance, heat transfer rate, entropy generation and flow patterns. Originality/value To the authors’ best knowledge, this paper is the first numerical investigation deals with the entropy generation and natural convection of hybrid nanofluid in a two-dimensional cavity, with specific thermal boundary conditions, containing an elliptical block under periodic-variable magnetic field. Different combinations between flow-governing parameters were made to find optimal thermal performance.

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MHD effect on conjugate heat transfer in a nanofluid filled rectangular enclosure

Cited by 12 publications

References 30 publications

Mathematical modeling of unsteady flow with uniform/non-uniform temperature and magnetic intensity in a half-moon shaped domain

Mathematical modeling of unsteady flow with uniform/non-uniform temperature and magnetic intensity in a half-moon shaped domain

Impact of Non-Uniform Periodic Magnetic Field on Unsteady Natural Convection Flow of Nanofluids in Square Enclosure

Thermal performance analysis of hybrid nanofluid natural convection in a square cavity containing an elliptical obstacle under variable magnetic field

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