Numerical evaluation of thermal and diffusive processes in magnetically induced tangent hyperbolic fluid flow with Dufour and Soret effects in a rotating channel

Abstract

Rotating channel flows are an important part of scientific and engineering applications including microfluidic devices, rotating machinery, and energy-efficient thermal systems. Despite extensive research, the behavior of magnetized fluids, thermal-diffusive processes and rotational effects on non-Newtonian fluids has remained underexplored. This study investigates the flow of tangent hyperbolic fluid in a vertical rotating channel under the effects of magnetic field (Lorentz force), Coriolis force, Dufour and Soret effects. The governing nonlinear differential equations are solved using MATLAB’s bvp5c solver. Results show that increasing the Grashof number from 0.5 to 1.25 enhances primary velocity by 42% which is highly relevant in designing rotating heat exchangers where natural convection aids cooling efficiency, whereas a higher Hartmann number suppresses it by 22.10% due to magnetic damping, highlights how magnetic control can be employed in MHD pumps to regulate flow rates. A 4.46% decrease in temperature was observed with an enhanced Soret effect, indicating improved thermal regulation particularly beneficial in applications like thermal insulation systems and microelectronic cooling. The entropy generation increases by 2.39% with higher values of the pressure gradient parameter, indicating greater energy loss in pressure-driven microchannel flows often encountered in cooling systems and biomedical devices. The Bejan number, skin-friction coefficient, Nusselt number and Sherwood number behavior are also analyzed. The findings provide quantitative insights relevant to designing advanced cooling systems and chemical reactors.