Analysis of entropy generation and Joule heating on curvilinear flow of thermally radiative viscous fluid due to an oscillation of curved Riga surface

M. Naveed, M. Imran, Z. Abbas and A. Nadeem
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M. Naveed: Department of Mathematics, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan 64200, Punjab, Pakistan
M. Imran: ��Government of Punjab School Education Department, Rahim Yar Khan 64200, Punjab, Pakistan
Z. Abbas: ��Department of Mathematics, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
A. Nadeem: �Department of Mathematical Sciences, Federal Urdu University of Art, Science and Technology, Islamabad 44000, Pakistan

International Journal of Modern Physics C (IJMPC), 2022, vol. 33, issue 07, 1-22

Abstract: This paper investigates the phenomena of heat transfer and entropy generation on time-dependent electro-magnetohydrodynamic boundary layer flow of viscous fluid past a curved oscillatory stretchable Riga surface. Also, the impacts of thermal radiation and Joule heating are accounted for in the energy equation. To develop the flow model in mathematical form, curvilinear coordinates system is followed. The series solution of the governing nonlinear partial differential equations is attained with the help of the homotopy analysis method (HAM). The impacts of various involved parameters like dimensionless radius of curvature, modified magnetic parameter, the proportion of frequency of oscillation of the sheet to its stretchable rate parameter, magnetic parameter, Prandtl number, Eckert number, radiation parameter and Brinkman number on entropy generation, Bejan number, temperature and flow equations are comprehensively examined and results are displayed through graphs. Numerical variation in the magnitude of surface drag force and local Nusselt number under the influence of aforesaid parameters are presented through the tables. Entropy generation is enhanced with an enhancement in a radius of curvature and Brinkman number, while the Bejan number shows opposite behavior for both parameters. The amplitude of velocity distribution shows growing behavior with modified magnetic parameter.

Keywords: Oscillating stretching surface; curved Riga surface; viscous fluid; thermal radiation; electro-magnetohydrodynamic (EMHD) (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1142/S0129183122500875

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