Mixed Convection Heat Transfer of Al2O3 Nanofluid on the Elliptical
                        Shapes: Numerical Study of Irreversibility

Khajeh, K.; Jahanshaloo, Leila; Ebrahimi, Sadollah; Aminfar, Habib

doi:10.29252/jafm.11.01.28080

Cited by 5 publications

(2 citation statements)

References 32 publications

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“…The study revealed that the local heat transfer coefficient is a direct function of Ra . Khajeh et al 13 considered lid‐driven convective heat transfer of Al 2 O 3 on elliptical configurations with entropy generation incorporated. They showed that in the presence of irreversibility, heat transfer augmentation was achieved.…”

Section: Introductionmentioning

confidence: 99%

Magnetoconvection around an elliptic cylinder placed in a lid‐driven square enclosure subjected to internal heat generation or absorption

Olayemi

Al‐Farhany

Obalalu³

et al. 2022

Heat Trans

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The impacts of MHD and heat generation/absorption on lid‐driven convective fluid flow occasioned by a lid‐driven square enclosure housing an elliptic cylinder have been investigated numerically. The elliptic cylinder and the horizontal enclosure boundaries were insulated and the left vertical lid‐driven wall was experienced at a fixed hot temperature, and the right wall was exposed to a fixed cold temperature. COMSOL Multiphysics 5.6 software was used to resolve the nondimensional equations governing flow physics. A set of parameters, such as Hartmann number (0 ≤ italicHa ≤ 50 $0\le {Ha}\le 50$), Reynolds number (1 0 2 ≤ italicRe ≤ 1 0 3 $1{0}^{2}\le {Re}\le 1{0}^{3}$), Grashof number (1 0 2 ≤ italicGr ≤ 1 0 5 $1{0}^{2}\le {Gr}\le 1{0}^{5}$), heat generation‐absorption parameter (− 3 ≤ J ≤ 3 $-3\le J\le 3$), and elliptical cylinder aspect ratio (AR) (1.0 ≤ italicAR ≤ 3.0 $1.0\le {AR}\le 3.0$) have been investigated. The current study discovered that for low Reynolds number, the adiabatic cylinder AR of 2.0 provided the optimum heat transfer enhancement for the model investigated, also the impact of cylinder size diminishes beyond Gr = 104. But for high Reynolds (Re = 1000), the size of the cylinder with AR = 3.0 offered the highest heat transfer augmentation. The clockwise flow circulation reduces because of an increase in AR, which hinders the flow circulation. In addition, heat absorption supports heat transfer augmentation while heat generation can suppress heat transfer improvement.

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Section: Introductionmentioning

confidence: 99%

Magnetoconvection around an elliptic cylinder placed in a lid‐driven square enclosure subjected to internal heat generation or absorption

Olayemi

Al‐Farhany

Obalalu³

et al. 2022

Heat Trans

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“…Khajeh et al. (2018), [ 42 ] presented laminar Al 2 O 3 nanofluid flow over cylinder with different cross section, the results focused on convective heat transfer coefficient and the entropy generation. Entropy generated and nanoparticles volume fraction enhanced heat transfer according to the results.…”

Section: Introductionmentioning

confidence: 99%

Mixed convection in sinusoidal lid driven cavity with non-uniform temperature distribution on the wall utilizing nanofluid

Aljabair

Ekaid

Ibrahim

et al. 2021

Heliyon

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Mixed convection heat transfer of Cu-water nanofluid in an arc cavity with non-uniform heating has been numerically studied. The top flat moving wall is isothermally cooled at Tc and moved with a constant velocity. While the heated arc stationary wall of the cavity is maintained at a hot temperature Th. FORTRAN code is used to solve the mass, momentum, and energy equations in dimensionless form with suitable boundary conditions. In this study, the Reynolds number changed from 1 to 2000, and the Rayleigh number changed from 0 to 10 7 . Also, the range of nanoparticles volume fraction extends from ϕ = 0 to 0.07. Stream vorticity method selected for the discretization of flow and energy equations. The present results are compared with the previous results for the validation part, where the results found a good agreement with the others works. The isotherms are regulated near the arc-shape wall causing a steep temperature gradient at these regions and the local and average heat transfer rate increases with increased volume fraction or Reynolds number or Rayleigh number. Finally, Correlation equations of the average Nusselt number from numerical results are presented.

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Buoyancy-assisted flow of yield stress fluids past a cylinder: Effect of shape and channel confinement

Patel

Chhabra

2019

Applied Mathematical Modelling

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Mixed Convection Heat Transfer of Al2O3 Nanofluid on the Elliptical Shapes: Numerical Study of Irreversibility

Cited by 5 publications

References 32 publications

Magnetoconvection around an elliptic cylinder placed in a lid‐driven square enclosure subjected to internal heat generation or absorption

Magnetoconvection around an elliptic cylinder placed in a lid‐driven square enclosure subjected to internal heat generation or absorption

Mixed convection in sinusoidal lid driven cavity with non-uniform temperature distribution on the wall utilizing nanofluid

Buoyancy-assisted flow of yield stress fluids past a cylinder: Effect of shape and channel confinement

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