Role of Cattaneo–Christov heat flux on MHD Sutterby fluid flow with radiation over a melting stretchable sheet with activation energy

The current investigation presents the numerical analysis of a non-Newtonian Sutterby fluid in the context of boundary-layer flow and heat-mass transfer across a permeable stretched sheet situated within a Darcy-Forchheimer porous medium subjected to an angled magnetic field. A mathematical model that incorporates activation energy and the Dufour effect together explains linked heat and concentration transfer in chemically reactive flows. Using suitable similarity transformations, the governing nonlinear partial differential equations are transformed into a system of coupled ordinary differential equations. Accurate solutions are obtained by utilising mesh-independent, convergence-criteria-based calculations after a robust numerical approach is used to solve the boundary value problem numerically. A comprehensive analysis is carried out on the effects of the controlling dimensionless factors on the distributions of concentration, temperature, and velocity as well as on engineering variables of practical relevance, such as the skin friction coefficient, Nusselt number, and Sherwood number. The results of this study have important implications for the development of better thermal systems for applications such as chemical reactors, cooling technologies, biomedical transport, polymer processing, geothermal energy extraction, and non-Newtonian fluids. To analyse the complicated MHD transport phenomena in engineering and industry, the research also provides a trustworthy numerical framework.