Volume 105, Issue 5 e70048
ORIGINAL PAPER

Three-dimensional boundary layer dynamics of couple-stress non-Newtonian fluids: MHD effects and generalized flux analysis via OHAM

Muhammad Sohail

Corresponding Author

Muhammad Sohail

Institute of Mathematics, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan, Pakistan

Department of Mathematics and Sciences, College of Humanities and Sciences, Prince Sultan University, Riyadh, Saudi Arabia

Composite Materials Scientific Research Center of Azerbaijan State University of Economics (UNEC), Baku, Azerbaijan

Correspondence

Muhammad Sohail, Institute of Mathematics, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan, 64200, Pakistan.

Email: [email protected]

Search for more papers by this author
Muhammad Awais Sherani

Muhammad Awais Sherani

Institute of Mathematics, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan, Pakistan

Search for more papers by this author
Kamaleldin Abodayeh

Kamaleldin Abodayeh

Department of Mathematics and Sciences, College of Humanities and Sciences, Prince Sultan University, Riyadh, Saudi Arabia

Search for more papers by this author
Syed Tehseen Abbas

Syed Tehseen Abbas

Institute of Mathematics, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan, Pakistan

Search for more papers by this author
First published: 19 April 2025

Abstract

This paper presents an investigation of the three-dimensional boundary layer dynamics of couple-stress non-Newtonian fluids under MHD effects. The generalized heat and mass flux models are formulated based on the non-Fourier (Cattaneo-Christov) and non-Fick theories. With the application of the Optimal Homotopy Analysis Method (OHAM), the governing equations, developed from momentum, energy, and mass conservation laws, are solved to analyze the intricate interplay between thermal, solutal, and fluid dynamic parameters. The methodology takes into account factors such as rotation, magnetic fields, and others: chemical reactions, thermal radiation, and Brownian motion. The results are extremely insightful: rotational forces retard linear velocity due to increased friction, while magnetic fields reduce flow dynamics. Thermal radiation increases fluid temperature, and increased Prandtl number and relaxation parameters reduce the rates of thermal transmission. Concentration profiles respond dynamically to chemical reaction rates and Brownian motion, and higher reactions enhance delays in particle diffusion. Numerical findings supported by Mathematica reveal that Nusselt and Sherwood numbers increase with thermal and mass transport parameters, confirming enhanced heat and mass transfer under specific conditions.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.