Numerical simulation of mixed convection heat transfer of nanofluid in lid-driven porous medium square enclosure

Munshi, M. Jahirul Haque; Алим, М. А.; Bhuiyan, Abdul Halim; Ahmed, K. F. U.

doi:10.1063/1.5115850

Cited by 5 publications

(4 citation statements)

References 13 publications

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“…Similar results were obtained in entropy generation. Another study on mixed convection of nanofluid in a lid-driven porous cavity was done by Munshi et al (2019). The porous cavity has several pairs of source sinks for heating and cooling.…”

Section: Introductionmentioning

confidence: 99%

Entropy generation minimization of hybrid nanofluid mixed convection flow in lid-driven square enclosure with heat-generating porous layer on inner walls

Çiçek,

Baytaş,

Baytaş

2023

HFF

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Purpose This study aims to numerically scrutinize the entropy generation minimization and mixed convective heat transfer of multi-walled carbon nanotubes–Fe3O4/water hybrid nanofluid flow in a lid-driven square enclosure with heat generation in the presence of a porous layer on inner surfaces, considering local thermal non-equilibrium (LTNE) approach and the non-Darcy flow model. Design/methodology/approach The dimensionless governing equations for hybrid nanofluid and solid phases are solved by applying the finite volume method and semi-implicit method for pressure-linked equations algorithm. Findings The roles of the internal heat generation in the porous layer, LTNE model and nanoparticles volume fraction on mixed convection phenomenon and entropy generation are introduced for lid-driven cavity hybrid nanofluid flow. Based on the investigation of entropy generation and heat transfer, the minimum total entropy generation and average Nusselt numbers are found at 1 ≤ Ri ≤ 10 where the effect of the forced and free convection flow directions being opposite each other is very significant. When considering various nanoparticle volume fractions, it becomes evident that the minimum entropy generation occurs in the case of φ = 0.1%. The outcomes of LTNE number reveal the operating parameters in which thermal equilibrium occurs between hybrid nanofluid and solid phases. Originality/value The analysis of entropy generation under various shear and buoyancy forces plays a significant role in the suitable thermal design and optimization of mixed convective heat transfer applications. This research significantly contributes to the optimization of design and the advancement of innovative solutions across diverse engineering disciplines, such as packed-bed thermal energy storage and thermal insulation.

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Section: Introductionmentioning

confidence: 99%

Entropy generation minimization of hybrid nanofluid mixed convection flow in lid-driven square enclosure with heat-generating porous layer on inner walls

Çiçek,

Baytaş,

Baytaş

2023

HFF

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“…The cavity also included an adiabatic block with an elliptic shape and linear side walls. Munshi et al [14] conducted a study on the numerical simulation of mixed convection heat transfer of nanofluid in a square enclosure with a lid-driven porous medium. The investigations have utilized numerical approaches such as finite element methods [15] and [16], which have been highly beneficial for simulating and comprehending intricate convective fluxes.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Mixed Convection in a Lid Driven Wavy Enclosure with Two Square Blocks Placed at Different Positions

Sarker,

Alam,

Munshi

2023

JAMP

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The purpose of this paper is to investigate the simulation of mixed convection in a lid-driven wavy enclosure with blocks positioned at various positions. This study also examined the impact of the longitudinal position of the heated block on heat transfer enhancement. The Galerkin weighted residual finite element method is employed to computationally solve the governing equations of Navier-Stokes, thermal energy, and mass conservation. The enclosure consists of two square heated blocks strategically placed at different heights-firstly, one set is closer to the bottom surface; secondly, one set is nearer to the middle area and finally, one set is closer to the upper undulating surface of the enclosure. The wavy top wall's thermal insulation, along with active heating of the bottom wall and blocks, generates a dynamic convective atmosphere. In addition, the left wall ascends as the right wall falls, causing the flow formed by the lid. The study investigates the impact of the Richardson number on many factors, such as streamlines, isotherms, dimensionless temperature, velocity profiles, and average Nusselt numbers. These impacts are depicted through graphical illustrations. In all instances, two counter-rotating eddies were generated within the cage. Higher rotating speed consistently leads to improved performance, irrespective of other characteristics. Furthermore, an ideal amalgamation of the regulating factors would lead to increased heat transmission.

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“…Iwastu et al [14] carried out numerical simulations on mixed convection within a driven cavity featuring a stable vertical temperature gradient. Munshi et al [15] analyzed the numerical simulation of mixed convection heat transfer using nanofluids in a lid-driven square enclosure filled with a porous medium. Additionally, Munshi et al [16] investigated hydrodynamic mixed convection in a lid-driven square cavity, which included an elliptic-shaped heated block with a corner heater.…”

Section: Introductionmentioning

confidence: 99%

The Impact of Nanofluid Flow in a Rhombus-Shaped Porous Enclosure on a Constant Heated Obstacle

Khandaker,

Munshi,

Alam

et al. 2023

EJMATH

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In this study, the focus is on investigating the characteristic of a nanofluid consisting of water as the base fluid and Copper nanoparticles. The analysis examines the impact of this nanofluid flow on a heated obstacle placed in a rhombus-shaped enclosure filled with porous media. The driving force behind the mixed convection is assumed to be the temperature difference created by the moving walls, where the top and bottom walls have a cold-to-hot flow in opposite directions. To obtain numerical solutions, the Galerkin weighted residual method is employed. The study explores the effects of the Darcy number and Richardson number on varies aspects, including streamlines, isotherms, dimensionless temperature, velocity profiles, average Nusselt numbers, and average fluid temperature. These effects are visualized through graphical representations. The findings reveal that both the Richardson number and Darcy number significantly influence the streamlines and isotherms within the system. Furthermore, the Darcy number proves to be an important control parameter for heat transfer in fluid flow through a porous medium in the enclosure. A heat transfer correlation for the average Nusselt number is provided, considering different Darcy numbers and Richardson numbers. To ensure the validity of the research, a comparison between the obtained results and previously published findings is conducted, showing a favorable agreement between them.

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Numerical simulation of mixed convection heat transfer of nanofluid in lid-driven porous medium square enclosure

Cited by 5 publications

References 13 publications

Entropy generation minimization of hybrid nanofluid mixed convection flow in lid-driven square enclosure with heat-generating porous layer on inner walls

Entropy generation minimization of hybrid nanofluid mixed convection flow in lid-driven square enclosure with heat-generating porous layer on inner walls

Modeling of Mixed Convection in a Lid Driven Wavy Enclosure with Two Square Blocks Placed at Different Positions

The Impact of Nanofluid Flow in a Rhombus-Shaped Porous Enclosure on a Constant Heated Obstacle

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