MHD Powell–Eyring fluid flow with Cattaneo–Christov heat and mass flux over a stretching sheet

This study investigates the influence of internal heat generation or absorption and both constructive and destructive chemical reactions on fluid flow. These effects are particularly significant in chemically reacting or dissociating fluids, where thermal energy exchange plays a crucial role. Such phenomena frequently arise in practical applications including chemical reactors, underground waste disposal, thermal management of semiconductor devices, and biomedical engineering processes such as targeted drug delivery involving reactive transport. The governing equations are highly nonlinear and coupled, making analytical solutions challenging. To overcome this complexity, a suitable numerical method is employed to obtain accurate solutions. Results for velocity, temperature, and concentration are illustrated graphically across varying parameter values. An increase in the heat and mass flux Deborah numbers (De 1 and De 2 ) leads to a reduction in velocity, while temperature and concentration increase with De 1 ; De 2 reduces both velocity and concentration. The skin friction coefficient (Cf), Nusselt number (Nu), and Sherwood number (Sh) exhibit growth with increasing De 1 , while De 2 enhances the Nusselt number at the wall.