Bijjula Prabhakar Reddy, Oluwole Daniel Makinde and Paul Majani Matao (DOI: 10.24874/jsscm.2025.19.02.06)

 

Abstract

 

This article analyzes the behavior of an unsteady mixed convection magneto-hydrodynamic thermo-diffusion and diffusion-thermo flow of heat creating non-Newtonian Casson fluid flow from an exponentially stimulating vertical porous plate encased in porous structure. The flow of fluid is caused by a ramped form temperature and concentration. In addition to this, chemical reaction, radiation, Joule and viscous heating dissipation effects are also integrated in the given problem. The coupled, nonlinear, non-dimensional governed model equations are resolved numerically by accepting the finite difference scheme. Computational results evidencing the comportment of the velocity, temperature and concentration profiles to the emerging parameters variation are displayed via graphical representations whereas the skin-friction, Sherwood and the Nusselt numbers are displayed via tables. The ensuing outcomes exposed that viscous heating dissipation, heat genesis, thermal radiation and diffusion thermo effects intensify the Casson fluid velocity and temperature. Likewise, the porosity parameter and buoyancy effects amplify the fluid velocity, but a contrary aspect is noted in consequence of the Casson parameter and magnetic potency. The fluid motion and concentration upgrade due to the thermo-diffusion effect, whereas the reverse anomaly is reported due to the chemical reaction aspect. Also, reduction is traced in the Nusselt number and skin-friction for greater viscous dissipation, Dufour effect and heat-producing parameter.

 

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