A study on entropy generation and heat transfer in a magnetohydrodynamic flow of a couple‐stress fluid through a thermal nonequilibrium vertical porous channel

Siddabasappa, C.; Siddheshwar, P. G.; Makinde, Oluwole Daniel

doi:10.1002/htj.22176

Cited by 10 publications

(2 citation statements)

References 26 publications

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“…Ahmed et al (2019) inspected the entropy production of a nanofluid above a vertically stretched cylinder owing to the transfer of heat and the boundary layer stream. Siddabasappa et al (2021) studied the influence of local thermal nonequilibrium on the characteristics of heat transfer and entropy production in the MHD stream of a couple-stress fluid over a vertical porous material. Abdelhameed (2021) investigated the creation of entropy within the MHD flow of a Newtonian fluid in the absence of an induced magnetic.…”

Section: Effects Of Various Parameters On Entropy Generationmentioning

confidence: 99%

Modeling entropy generation of magnetohydrodynamics flow of nanofluid in a porous medium: a review

Zahor

Jain

Ali

et al. 2022

HFF

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Purpose The purpose of this paper is to review previous research studies on mathematical models for entropy generation in the magnetohydrodynamics (MHD) flow of nanofluids. In addition, the influence of various parameters on the velocity profiles, temperature profiles and entropy generation was studied. Furthermore, the numerical methods used to solve the model equations were summarized. The underlying purpose was to understand the research gap and develop a research agenda. Design/methodology/approach This paper reviews 141 journal articles published between 2010 and 2022 on topics related to mathematical models used to assess the impacts of various parameters on the entropy generation, heat transfer and velocity of the MHD flow of nanofluids. Findings This review clarifies the application of entropy generation mathematical models, identifies areas for future research and provides necessary information for future research in the development of efficient thermodynamic systems. It is hoped that this review paper can provide a basis for further research on the irreversibility of nanofluids flowing through different channels in the development of efficient thermodynamic systems. Originality/value Entropy generation analysis and minimization constitute effective approaches for improving the performance of thermodynamic systems. A comprehensive review of the effects of various parameters on entropy generation was performed in this study.

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Section: Effects Of Various Parameters On Entropy Generationmentioning

confidence: 99%

Modeling entropy generation of magnetohydrodynamics flow of nanofluid in a porous medium: a review

Zahor

Jain

Ali

et al. 2022

HFF

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“…Siddabasappa 22 investigated the flow behavior of a Newtonian fluid flow through a porous medium in the presence of thermal radiation and internal heat source numerically using the finite difference method. Siddabasappa et al 23 study the entropy generation and fluid flow and heat transfer characteristics of the MHD flow of a couple‐stress fluid through a porous medium.…”

Section: Introductionmentioning

confidence: 99%

A numerical study on heat transfer and MHD flow of a Newtonian through a porous channel—Local thermal nonequilibrium model

Siddabasappa

Kalpana²,

Babitha

2022

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Vast numbers of studies concentrate on the thermal equilibrium state whereas in many real‐world applications the model exists in the nonequilibrium state. Also, local thermal non‐equilibrium precisely represents the thermohydroflow characteristics. Therefore, the current study examines the heat transfer and fluid flow characteristics of the magnetohydrodynamic flow of a Newtonian fluid through a local thermal non‐equilibrium (LTNE) porous channel in the presence of the induced magnetic field. The mathematical model of the prescribed flow encloses the coupled nonlinear equations which are difficult to approach analytically. Hence, they are solved numerically using the shooting method with the Newton–Raphson method. The implications of various physical parameters of the problem on fluid flow, induced magnetic field, current density, temperature profiles, and heat transfer are elucidated with the aid of plots and tables. From the examination, it is clear that the porous medium significantly influences the characteristics of the fluid flow. That is, the least value of the Darcy number is related to a higher momentum field. Another interesting phenomenon is that the induced magnetic field remarkably enhances when the Darcy number is high, whereas the process is contrary to the current density. The effect of LTNE on the flow characteristics and heat transfer ceases for higher values of inter‐phase heat transfer coefficient and the ratio of thermal conductivities, which gives rise to the local thermal equilibrium (LTE) situation. Furthermore, the amount of heat transport is maximum in the LTE case compared to that of the LTNE case.

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Numerical investigation of slip effects on heat and mass transfer in a vertical channel with immiscible micropolar and viscous fluids of variable viscosity

Gosty,

Srinivas,

Suresh Babu

2024

Heat Trans

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This study investigates the fluid flow, heat, and mass transfer phenomena within a vertical channel containing two immiscible fluids, with a particular focus on slip effects. These effects include no slip, velocity slip, thermal slip, and multiple slips, each analyzed with appropriate boundary conditions. The study thoroughly examines key characteristics, such as variations in thermal conductivity and viscosity. Using a sixth‐order Runge–Kutta numerical method implemented using Mathematica, the study achieves precise solutions for complex scenarios. The detailed results show how the various slip mechanisms and relevant parameters interact with each other in complex ways. These findings are useful for both theoretical understanding and application in real‐life engineering situations. This study also gives important information about how fluid flow, heat transfer, and mass transfer change under different slip effects. It looks at these effects and shows how they change visually. It also carefully calculates and analyzes engineering parameters like the Nusselt number, shear stress, and Sherwood number using bar charts, showing how they affect and behave. The study resulted in velocity slip having a minimal impact on temperature, whereas thermal slip resulted in higher temperatures. Both velocity and thermal slip conditions simultaneously result in the lowest temperatures.

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A study on entropy generation and heat transfer in a magnetohydrodynamic flow of a couple‐stress fluid through a thermal nonequilibrium vertical porous channel

Cited by 10 publications

References 26 publications

Modeling entropy generation of magnetohydrodynamics flow of nanofluid in a porous medium: a review

Modeling entropy generation of magnetohydrodynamics flow of nanofluid in a porous medium: a review

A numerical study on heat transfer and MHD flow of a Newtonian through a porous channel—Local thermal nonequilibrium model

Numerical investigation of slip effects on heat and mass transfer in a vertical channel with immiscible micropolar and viscous fluids of variable viscosity

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