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标题：Analysis of Platelet Shape Al2O3 and TiO2 on Heat Generative Hydromagnetic Nanofluids for the Base Fluid C2H6O2 in a Vertical Channel of Porous Medium
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作者：Silpi HAZARIKA ; Sahin AHMED ; Ali J. CHAMKHA 等
期刊名称：Walailak Journal of Science and Technology (WJST)
印刷版ISSN：2228-835X
出版年度：2021
卷号：18
期号：14
页码：1-19
DOI：10.48048/wjst.2021.21424
语种：English
出版社：Institute of Research and Development, Walailak University.
摘要：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 C2H6O2 has a higher viscosity and thermal conductivity than that of water. Physically, the platelet shape Al2O3 nanofluid has the highest velocity than TiO2 nanofluid. 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.HIGHLIGHTSImpact of platelet shape Al2O3 and TiO2 for base fluid C2H6O2 is studiedIn Couette and Poiseuille flow, nanoparticles play a vital role to enhance the heat transferThe infinite series solution has been used for solving the non-linear PDE’sThe uses of Al2O3 and TiO2 in significant heat transfer applications is overviewedThe physiochemical and structural features of metal oxide nanoparticles have diverse biomedical applicationsGRAPHICAL.
关键词：Aluminium oxide; Ethylene Glycol; Heat generation; Hydromagnetic boundary layer flow; Porosity; Nanoparticles volume fraction; Titanium dioxide