Natural convective flow of non-isothermal hybrid nanofluid inside the cavity with the influence of a heated fin and non-linear thermal radiation: Second law analysis

Iftikhar, Babar; Javed, Tariq; Siddiqui, Muhammad Arshad

doi:10.1016/j.mtcomm.2023.105341

Cited by 5 publications

(3 citation statements)

References 25 publications

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“…The outcomes have demonstrated that the presence of nanoadditives enhances the fluid flow rate by 47.4%, in contrast to the case of a pure base medium. The work of M. Hatami [4] is similar to the study of Iftikhar et al [6], but the side walls and the upper one are cooled. Additionally, two types of nanoparticles, namely, TiO 2 and Al 2 O 3 , are studied.…”

Section: Introductionmentioning

confidence: 75%

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Mathematical Modeling of Pseudoplastic Nanofluid Natural Convection in a Cavity with a Heat-Generating Unit and Solid Finned Heat Sink

Loenko,

Sheremet

2023

Mathematics

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The power-law nanofluid natural convection in a chamber with a thermally generating unit and a solid ribbed structure has been studied in this work. A mixture of carboxymethylcellulose with water and copper nanoparticles is a working fluid illustrating pseudoplastic properties. The effective properties of the nanoliquid have been described by experimental correlations reflecting the temperature effect. The governing equations have been formulated on the basis of the conservation laws of mass, momentum and energy employing non-primitive parameters such as stream function and vorticity. The defined boundary value problem has been worked out by the finite difference technique using an independently developed calculation system. The Rayleigh number is fixed for analysis (Ra = 105). The paper analyzes the influence of the nanoparticles volume fraction, an increase in which reduces the temperature in the case of the one edge presence. An analysis of the rib height has shown that its growth leads to a weakening of the convective heat transfer, but at the same time, the source temperature also decreases. Increasing the number of fins from 1 to 3 also helps to reduce the average temperature of the heat-generated element by 15%.

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Section: Introductionmentioning

confidence: 75%

“…Mounting the fins on the blocks surface reduces their temperature by up to 12%. The influence of the heated fin presence on the hybrid nanofluid natural convection has been studied by Iftikhar et al [6]. The working medium is a mixture of ethylene glycol with copper and silver nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling of Pseudoplastic Nanofluid Natural Convection in a Cavity with a Heat-Generating Unit and Solid Finned Heat Sink

Loenko,

Sheremet

2023

Mathematics

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“…It was revealed that blade-shaped nanoparticles improve the thermal transport by 7.65%, compared to 2.86% for spherical nanoparticles. Iftikhar et al [4] explored the influences of hot fins and radiation on the NC flow of Ag and Cu nanoparticles dispersed in ethylene glycol. The study demonstrates an improvement of the buoyancy-driven flow with an increase in fin dimensions and NP concentration; the enhancement reached a 42% increase in fluid velocity and 57% of the heat transfer rate.…”

Section: Introductionmentioning

confidence: 99%

Control of Three-Dimensional Natural Convection of Graphene–Water Nanofluids Using Symmetrical Tree-Shaped Obstacle and External Magnetic Field

Aich,

Hilali-Jaghdam,

Alshahrani

et al. 2024

Symmetry

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This numerical investigation explores the enhanced control of the 3D natural convection (NC) within a cubic cavity filled with graphene–water nanofluids, utilizing a bottom-center-located tree-shaped obstacle and a horizontal magnetic field (MF). The analysis includes the effects of the Rayleigh number (Ra), the solid volume fraction of graphene (φ), the Hartmann number (Ha), and the fins’ length (W). The results show complex flow patterns and thermal behavior within the cavity, indicating the interactive effects of nanofluid properties, the tree-shaped obstacle, and magnetic field effects. The MHD effects reduce the convection, while the addition of graphene improves the thermal conductivity of the fluid, which enhances the heat transfer observed with increasing Rayleigh numbers. The increase in the fins’ length on the heat transfer efficiency is found to be slightly negative, which is attributed to the complex interplay between the enhanced heat transfer surface area and fluid flow disruption. This study presents an original combination of non-destructive methods (magnetic field) and a destructive method (tree-shaped obstacle) for the control of the fluid flow and heat transfer characteristics in a 3D cavity filled with graphene–water nanofluids. In addition, it provides valuable information for optimizing heat transfer control strategies, with applications in electronic cooling, renewable energy systems, and advanced thermal management solutions. The application of a magnetic field was found to reduce the maximum velocity and total entropy generation by about 82% and 76%, respectively. The addition of graphene nanoparticles was found to reduce the maximum velocity by about 5.5% without the magnetic field and to increase it by 1.12% for Ha = 100. Varying the obstacles’ length from W = 0.2 to W = 0.8 led to a reduction in velocity by about 23.6%.

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Magnetohydrodynamic quadratic convective and radiative heat transfer analysis of magnetite ferrofluid CoFe2O4–H2O in a corner-heated porous square cavity

Santhosh,

Reddy

2024

J Therm Anal Calorim

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Natural convective flow of non-isothermal hybrid nanofluid inside the cavity with the influence of a heated fin and non-linear thermal radiation: Second law analysis

Cited by 5 publications

References 25 publications

Mathematical Modeling of Pseudoplastic Nanofluid Natural Convection in a Cavity with a Heat-Generating Unit and Solid Finned Heat Sink

Mathematical Modeling of Pseudoplastic Nanofluid Natural Convection in a Cavity with a Heat-Generating Unit and Solid Finned Heat Sink

Control of Three-Dimensional Natural Convection of Graphene–Water Nanofluids Using Symmetrical Tree-Shaped Obstacle and External Magnetic Field

Magnetohydrodynamic quadratic convective and radiative heat transfer analysis of magnetite ferrofluid CoFe2O4–H2O in a corner-heated porous square cavity

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