Dufour–Nanoparticle Effects of Magnetohydrodynamic Casson Nanofluid over a Stretching Sheet

Authors

Keywords:

Non-Newtonian, Schmidt number, Chemical Reaction, Boundary Layer, Heat, Mass Transport

Abstract

The magnetohydrodynamic flow of a Casson nanofluid, governed by key thermophysical parameters, is examined in this study. The flow is generated by a linearly stretching surface and is influenced by a transverse magnetic field, thermal radiation, and internal heat generation or absorption. To simplify the governing transport equations, suitable similarity variables are introduced, reducing them to a coupled set of nonlinear ordinary differential equations. These dimensionless equations are solved numerically using a shooting technique integrated with a fourth‑order Runge–Kutta algorithm, and the accuracy of the results is confirmed through MATLAB’s bvp4c solver. The analysis reveals that a stronger magnetic field slows fluid motion while increasing temperature and concentration distributions due to enhanced Lorentz force effects. A rise in the chemical reaction parameter diminishes the velocity, thermal, and concentration fields as reactive interactions intensify. The Dufour number increases with higher temperatures and amplifies concentration through cross‑diffusion effects. In contrast, higher Schmidt numbers reduce the velocity, temperature, and concentration distributions, reflecting weakened mass diffusivity.

Author Biographies

Onojovwo Felix Tega

Postgraduate Student

Department of Mathematics

Federal University Lokoja

PMB 1154, Kogi State, Nigeria

Jessica Mrumun Gyegwe

Senior Lecturer

Department of Mathematics

Federal University Lokoja

PMB 1154, Kogi State, Nigeria

Sunday Obomeviekome Imoni

Professor

Department of Mathematics

Federal University Lokoja

PMB 1154, Kogi State, Nigeria

Dimensions

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Published

2026-07-24

How to Cite

Dufour–Nanoparticle Effects of Magnetohydrodynamic Casson Nanofluid over a Stretching Sheet (A. O. Oyem, F. T. Onojovwo, J. M. Gyegwe, & S. O. Imoni, Trans.). (2026). Nigerian Journal of Applied Physics, 2(2), 144-159. https://doi.org/10.62292/

Issue

Vol. 2 No. 2 (2026): Nigerian Journal of Applied Physics - Vol. 2 No. 2

Section

Articles
Copyright & Licensing

Copyright (c) 2026 Anselm Onyekachukwu Oyem, Onojovwo Felix Tega, Jessica Mrumun Gyegwe, Sunday Obomeviekome Imoni

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

How to Cite

Dufour–Nanoparticle Effects of Magnetohydrodynamic Casson Nanofluid over a Stretching Sheet (A. O. Oyem, F. T. Onojovwo, J. M. Gyegwe, & S. O. Imoni, Trans.). (2026). Nigerian Journal of Applied Physics, 2(2), 144-159. https://doi.org/10.62292/