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Entropy Analysis of a Radiating Magnetic Liquid Film along a Slippery Inclined Heated Surface with Convective Cooling | ||
| Journal of Applied and Computational Mechanics | ||
| مقاله 8، دوره 6، Special Issue، اسفند 2020، صفحه 1141-1150 اصل مقاله (1.54 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22055/jacm.2019.31590.1896 | ||
| نویسندگان | ||
| Oluwole Daniel Makinde1؛ Adetayo Samuel Eegunjobi* 2 | ||
| 1Faculty of Military Science, Stellenbosch University, Private Bag X2, Saldanha 7395, South Africa | ||
| 2Mathematics Department, Namibia University of Science and Technology, Windhoek, 9000, Namibia | ||
| چکیده | ||
| The hydromagnetic flow of a Newtonian incompressible and electrically conducting variable-viscosity liquid film along an inclined isothermal or isoflux hydrophobic surface is investigated numerically. It is assumed that the fluid is subjected to a convective cooling at the free surface in the presence of a transversely imposed magnetic field. We incorporated in the energy equation, the viscous dissipation, Joule heating due to the magnetic field and the local radiative heat flux term for optically thick gray fluid reported by Roseland approximation. The governing non-linear differential equations are obtained and solved numerically using the shooting method coupled with a fourth-order Runge-Kutta method. The effects of some parameters on velocity and temperature profiles, skin friction, Nusselt number entropy generation rate, and the Bejan number profiles are analyzed graphically and discussed. | ||
| کلیدواژهها | ||
| Inclined slippery surface؛ Magnetic liquid film؛ Variable viscosity؛ Thermal radiation؛ Convective cooling؛ Entropy analysis | ||
| مراجع | ||
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[13] Mkwizu, M.H., Makinde, O.D., Entropy generation in a variable viscosity channel flow of nanofluids with convective cooling. Comptes Rendus Mécanique, 343, 2015, 38-56.
[14] Eegunjobi, A.S., Makinde, O.D., Second law analysis for MHD permeable channel flow with variable electrical conductivity and asymmetric Navier slips. Open Physics, 13, 2015, 100-110.
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[17] Makinde, O.D., Eegunjobi, A.S., Entropy analysis of thermally radiating magnetohydrodynamics slip flow of Casson fluid in a microchannel filled with saturated porous media. Journal of Porous Media, 19(9), 2016, 799-810.
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