Unsteady electro-osmotic thermal convection of a reactive third-grade fluid with exothermic reaction in a porous medium saturated micro-channel

Khan, Idrees; Chinyoka, T.; Gul, Taza; Mukhtar, Safyan; Ali, Ishtiaq; Muhammad, Taseer

doi:10.1007/s10973-024-13116-5

J Therm Anal Calorim

2024

DOI: 10.1007/s10973-024-13116-5

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Unsteady electro-osmotic thermal convection of a reactive third-grade fluid with exothermic reaction in a porous medium saturated micro-channel

Idrees Khan,

T. Chinyoka,

Taza Gul

et al.

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2024

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Cited by 2 publications

References 33 publications

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Transient gravity‐driven flow of a third‐grade fluid (TGF) on an inclined plane with non‐isothermal effects, exothermic reactions, and porous medium influence

Khan,

Zulkifli,

Chinyoka

et al. 2024

Z Angew Math Mech

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Comprehending the dynamics of reactive viscoelastic third‐grade fluids (VTGF) in gravity‐driven flows along inclined planes is crucial for numerous engineering and industrial applications. This research focuses to explore the transient behavior of such a fluid under non‐isothermal conditions, with an emphasis on the impact of exothermic reactions. The inclined plane region, filled with a porous material of constant permeability, is modeled using a modified version of Darcy's law to account for resistance to flow. The viscosity‐temperature dependence follows the Nahme‐type principle, while convective cooling at the free surface is simulated using Newton's cooling law. The exothermic chemical reaction of the material is described using Arrhenius kinetics. The resulting mathematical model for energy balanced and momentum comprises a set of non‐homogeneous and nonlinear partial differential equations (PDEs), which are transformed into dimensionless form and solved using semi‐implicit numerical techniques based on finite difference methods (FDM) implemented in Matlab. The study visually examines thermo‐dynamical phenomena such as thermal runaway due to the exothermic reaction and investigates how velocity and temperature respond to variations in system parameters. The numerical findings indicate that the interplay between porous medium, viscosity variation, and thermal effects significantly influences the flow and thermal behavior, providing valuable insights for optimizing and controlling such fluid systems in practical applications.

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Transient gravity‐driven flow of a third‐grade fluid (TGF) on an inclined plane with non‐isothermal effects, exothermic reactions, and porous medium influence

Khan,

Zulkifli,

Chinyoka

et al. 2024

Z Angew Math Mech

View full text Add to dashboard Cite

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The neural networking strategy results in the tri‐hybrid nanofluid flowing over a slippery flat plate to act as an antimicrobial agent through solar radiation

Ajmal,

Gul,

Almutairi

et al. 2024

Z Angew Math Mech

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Hybrid nanofluids are employed to enhance the antibacterial effect produced by solar radiation. Antimicrobial properties are present in metal nanoparticles (such as silver, copper, or zinc) or metal oxides (such as titanium dioxide or zinc oxide) when exposed to solar radiation. Nanomaterials that have antimicrobial properties are selected from the available literature. A solar sheet with an inclined plane has been chosen and filled with tri‐hybrid nanofluids (THNFs). Hybrid nanofluids including (CuO), Copper oxide, TiO2 (Titanium oxide), and SiO2 (Silicon dioxide), are selected from metal and metal oxide classes including water as a base fluid. The antimicrobial action caused by solar radiation is enhanced by the slip boundaries and variable porous space. The influence of flow and thermal fields on isotherms, velocities, flow lines, and Nusselt numbers are considered. The transformed system of differential equations is solved by the Control Volume Finite Element Method (CVFEM) and RK‐4 technique. The nanoparticulate volume fraction of CuO, TiO2, and SiO2 is largely responsible for the enhancement in the heat transfer rate (HT), as observed. Improved thermal performance is achieved through the flow of THNFs, which in turn acts as an antimicrobial agent. Increasing values of parameters lead to an improvement in the heat transfer rate, which in turn decreases microbial activity.

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Unsteady electro-osmotic thermal convection of a reactive third-grade fluid with exothermic reaction in a porous medium saturated micro-channel

Cited by 2 publications

References 33 publications

Transient gravity‐driven flow of a third‐grade fluid (TGF) on an inclined plane with non‐isothermal effects, exothermic reactions, and porous medium influence

Transient gravity‐driven flow of a third‐grade fluid (TGF) on an inclined plane with non‐isothermal effects, exothermic reactions, and porous medium influence

The neural networking strategy results in the tri‐hybrid nanofluid flowing over a slippery flat plate to act as an antimicrobial agent through solar radiation

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