Parametric Study of Entropy Generation in Magnetohydrodynamic Casson Fluid Flow on a Porous Stretching Sheet under an Inclined Magnetic Field

Document Type : Research Paper

Authors
Sina Sadighi 1
Goodarz Ahmadi 2
Hossein Afshar 3
Hossein Ahmadi Danesh Ashtiani 1
Mohsen Jabbari 1
1 Department of Mechanical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
2 Department of Mechanical and Aeronautical Engineering, Clarkson University, Potsdam, USA
3 Department of Mechanical Engineering, East Tehran Branch, Islamic Azad University, Tehran, Iran
10.22055/jacm.2024.47739.4778
Abstract
This study presents the analytical solutions of the entropy production of magnetohydrodynamic Casson fluid flow on a porous extending sheet. An investigation was conducted to analyze the role of permeability, inclined magnetic force, radiation, Joule dissipation, viscous dissipation, and heat generation/absorption on the momentum and energy equations leading to entropy generation. A closed-form energy equation solution was achieved by utilizing the confluent hypergeometric function. The presented results showed that entropy production is directly related to the Eckert number and inversely related to the Darcy number and the Casson parameter. By increasing the Casson parameter from 0.2 to 100 in the high suction mode, the local Nusselt number was increased by 204.6%.
Keywords
Analytical solutions
MHD
Casson fluid flow
Stretching sheet
Joule heating
Entropy generation
Subjects

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Journal of Applied and Computational Mechanics
Volume 11, Issue 3
Summer 2025
Pages 681-691