Numerical Study of Flow and Heat Transfer in a Rectangular Channel Partially Filled with Porous Media at the Pore Scale Using Lattice Boltzmann Method

Lai, Tianwang; Liu, Xiang Yang; Chu, Jianchun; He, Maogang; Zhang, Ying

doi:10.1080/01457632.2021.1906507

Heat Transfer Engineering

2021

DOI: 10.1080/01457632.2021.1906507

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Numerical Study of Flow and Heat Transfer in a Rectangular Channel Partially Filled with Porous Media at the Pore Scale Using Lattice Boltzmann Method

Tianwang Lai

Xiang Yang Liu

Jianchun Chu

et al.

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Cited by 3 publications

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“…The numerical analyses related to flow in a porous medium are usually concerned with two scales, such as the pore scale and the representative elementary volume (REV) scale. According to REV, the existence of a porous medium can be modelled by including additional terms in the governing equations, such as the Brinkman term, the Forchheimer term and the Darcy term (Lai et al, 2022). While considering that the porous space has a larger pore radius, Darcy's law is not sufficient; therefore, HFF 33,10 Forchheimer introduced the nonlinear term in the momentum equation.…”

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confidence: 99%

Numerical computation on MHD natural convective ternary nanofluid flow and heat transfer in a porous square cavity: Marker-and-cell technique

Thirumalaisamy

Reddy

2023

HFF

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Purpose The analysis of fluid flow and thermal transport performance inside the cavity has found numerous applications in various engineering fields, such as nuclear reactors and solar collectors. Nowadays, researchers are concentrating on improving heat transfer by using ternary nanofluids. With this motivation, the present study analyzes the natural convective flow and heat transfer efficiency of ternary nanofluids in different types of porous square cavities. Design/methodology/approach The cavity inclination angle is fixed ω = 0 in case (I) and ω=π4 in case (II). The traditional fluid is water, and Fe3O4+MWCNT+Cu/H2O is treated as a working fluid. Ternary nanofluid's thermophysical properties are considered, according to the Tiwari–Das model. The marker-and-cell numerical scheme is adopted to solve the transformed dimensionless mathematical model with associated initial–boundary conditions. Findings The average heat transfer rate is computed for four combinations of ternary nanofluids: Fe3O4(25%)+MWCNT(25%)+Cu(50%),Fe3O4(50%)+MWCNT(25%)+Cu(25%),Fe3O4(33.3%)+MWCNT(33.3%)+Cu(33.3%) and Fe3O4(25%)+MWCNT(50%)+Cu(25%) under the influence of various physical factors such as volume fraction of nanoparticles, inclined magnetic field, cavity inclination angle, porous medium, internal heat generation/absorption and thermal radiation. The transport phenomena within the square cavity are graphically displayed via streamlines, isotherms, local and average Nusselt number profiles with adequate physical interpretations. Practical implications The purpose of this study is to determine whether the ternary nanofluids may be used to achieve the high thermal transmission in nuclear power systems, generators and electronic device applications. Social implications The current analysis is useful to improve the thermal features of nuclear reactors, solar collectors, energy storage and hybrid fuel cells. Originality/value To the best of the authors’ knowledge, no research has been carried out related to the magneto-hydrodynamic natural convective Fe3O4+MWCNT+Cu/H2O ternary nanofluid flow and heat transmission filled in porous square cavities with an inclined cavity angle. The computational outcomes revealed that the average heat transfer depends not only on the nanoparticle’s volume concentration but also on the existence of heat source and sink.

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confidence: 99%

Numerical computation on MHD natural convective ternary nanofluid flow and heat transfer in a porous square cavity: Marker-and-cell technique

Thirumalaisamy

Reddy

2023

HFF

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Enhancement of Thermal Design of Pipe Filled Partially with Porous Media Using Eccentric Fluid Cores

et al. 2022

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Impact of the magnetic field and the height and number of triangular blades inside a rectangular cavity on natural convection heat transfer

Mustafa,

Alqaed,

Sajadi

et al. 2024

Results in Physics

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Numerical Study of Flow and Heat Transfer in a Rectangular Channel Partially Filled with Porous Media at the Pore Scale Using Lattice Boltzmann Method

Cited by 3 publications

References 45 publications

Numerical computation on MHD natural convective ternary nanofluid flow and heat transfer in a porous square cavity: Marker-and-cell technique

Numerical computation on MHD natural convective ternary nanofluid flow and heat transfer in a porous square cavity: Marker-and-cell technique

Enhancement of Thermal Design of Pipe Filled Partially with Porous Media Using Eccentric Fluid Cores

Impact of the magnetic field and the height and number of triangular blades inside a rectangular cavity on natural convection heat transfer

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