Analysis of Platelet Shape Al2O3 and TiO2 on Heat Generative Hydromagnetic Nanofluids for the Base Fluid C2H6O2 in a Vertical Channel of Porous Medium

Silpi  HAZARIKA; Sahin  AHMED; Ali J.  CHAMKHA

doi:10.48048/wjst.2021.21424

Authors

Silpi HAZARIKA Heat Transfer and Fluid Mechanics Research, Department of Mathematics, Rajiv Gandhi University, Arunachal Pradesh 791112, India
Sahin AHMED Heat Transfer and Fluid Mechanics Research, Department of Mathematics, Rajiv Gandhi University, Arunachal Pradesh 791112, India
Ali J. CHAMKHA Faculty of Engineering, Kuwait College of Science and Technology, Doha District, Kuwait

DOI:

https://doi.org/10.48048/wjst.2021.21424

Keywords:

Aluminium oxide, Ethylene Glycol, Heat generation, Hydromagnetic boundary layer flow, Porosity, Nanoparticles volume fraction, Titanium dioxide

Abstract

An analytical investigation is performed on the unsteady hydromagnetic flow of nanoparticles Al₂O₃ and TiO₂ in the EG base fluid through a saturated porous medium bounded by two vertical surfaces with heat generation and no-slip boundary conditions. The physics of initial and boundary conditions is designated with the flow model's non-linear partial differential equations. The analytical expressions of nanofluid velocity and temperature with the channel are derived, and Matlab Codes are used to plot the significant results for physical variables. From the physical point of view for nanofluid velocity and temperature results, the base fluid C₂H₆O₂has a higher viscosity and thermal conductivity than that of water. Physically, the platelet shape Al₂O₃ nanofluid has the highest velocity than TiO₂nanofluid. It is found that the velocity of nanofluid enhanced the porosity and nanoparticles volume fraction for Al₂O₃ - EG and TiO₂ - EG base nanofluids. However, this trend is reversed for the effects of heat generation. Obtained results indicate that an increase in nanoparticles volume fraction raises the skin friction near the surface, but profiles gradually become linear, due to less frictional effects of nanoparticles. Moreover, due to higher values of nanoparticles volume fraction, the thermal conductivity is raised, and thus the thickness of the thermal boundary layer is declined. The results show that the method provides excellent approximations to the analytical solution of nonlinear system with high accuracy. Metal oxide nanoparticles have wide applications in various fields due to their small sizes, such as the pharmaceutical industry and biomedical engineering.

HIGHLIGHTS

Impact of platelet shape Al₂O₃ and TiO₂ for base fluid C₂H₆O₂ is studied
In Couette and Poiseuille flow, nanoparticles play a vital role to enhance the heat transfer
The infinite series solution has been used for solving the non-linear PDE’s
The uses of Al₂O₃ and TiO₂ in significant heat transfer applications is overviewed
The physiochemical and structural features of metal oxide nanoparticles have diverse biomedical applications

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