MHD Mass Transfer Flow in Presence of Chemical Reaction, Thermal Radiation, and Thermal Diffusion Effect

ABSTRACT The present work is interested in investigating the impacts of chemical reaction, magnetic field, thermal radiation, heat sink, and thermal diffusion on a steady two‐dimensional MHD convection‐free heat and mass transfer flow past a semi‐infinite upright porous plate. The dimensionless domain equations are solved analytically using the perturbation technique for two distinct scenarios: (a) small suction and (b) large suction. The effects of various crucial parameters on velocity, temperature, concentration, as well as on the skin friction, Nusselt number, and Sherwood number are graphically illustrated, and the subsequent discussion is rooted on the derived outcomes. Graphical representations were created utilizing MATLAB software. The results suggest that an increase in the Soret effect elevates both the momentum and concentration boundary layers while reducing the mass transfer rate, regardless of the suction intensity. Our research also identified a captivating result where fluid velocity escalates with higher magnetic values in the scenario of large suction, while it demonstrates contrasting behavior under small suction condition. The present investigation holds significant relevance across various industrial sectors, including uranium enrichment, petrology, petroleum reservoirs, polymer fractionation, among others.