APPLIED JOURNAL OF PHYSICAL SCIENCE
Integrity Research Journals
ISSN: 2756-6684
Model: Open Access/Peer Reviewed
DOI: 10.31248/AJPS
Start Year: 2018
Email: ajps@integrityresjournals.org
Induced magnetic field effect on steady magnetohydrodynamic natural convection Couette flow with variable fluid properties in a vertical channel
https://doi.org/10.31248/AJPS2025.132 | Article Number: 8AEA03033 | Vol.6 (5) - December 2025
Received Date: 03 October 2025 | Accepted Date: 18 November 2025 | Published Date: 30 December 2025
Authors: Kabir M. Tafida* , Aisha Y. Abdullahi and Muhammed Yahuza
Keywords: Homotopy perturbation method, induced magnetic field, natural convection, variable viscosity, variable thermal conductivity.
This study investigates steady magnetohydrodynamic (MHD) natural convection Couette flow in a vertical channel, incorporating temperature-dependent fluid properties, namely viscosity and thermal conductivity, to more accurately represent realistic flow behaviour. The analysis accounts for the induced magnetic field by the motion of the conducting fluid, and the governing momentum, energy, and magnetic induction equations are solved using the Homotopy Perturbation Method. Results show that decreasing viscosity with increasing temperature enhances fluid motion, whereas higher thermal conductivity improves heat distribution but may reduce flow acceleration. An increase in the Hartmann number suppresses fluid velocity due to stronger magnetic damping, while higher magnetic Prandtl numbers amplify the induced magnetic field. Additionally, reduced viscosity increases skin friction on the moving plate while decreasing it on the stationary plate. These findings offer valuable insights for a wide range of engineering and industrial applications, including cooling of electronic devices and nuclear reactors, MHD power generation, metallurgical process control, and thermal management in aerospace systems. They are also relevant to biomedical devices utilizing magnetic field-assisted fluid control, geothermal energy extraction, and advanced chemical reactors, where efficient heat and mass transfer under magnetic fields can improve overall performance and product quality.
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