Magnetohydrodynamics flow over a power law stretching sheet with viscous dissipation and chemical reaction effects

Abstract

This study numerically examines the flow of a Casson nanofluid over a stretching sheet in the presence of a chemical reaction influenced by activation energy. The fluid motion is modelled using the governing boundary layer equations for momentum, energy, and concentration. These equations are transformed into a set of ordinary differential equations through similarity transformations and solved using MATLAB’s built-in solver bvp4c. The effects of various flow parameters on velocity, temperature, and concentration profiles are analysed. Key physical quantities, including the Nusselt number and skin friction coefficient, are evaluated to assess the heat transfer rate and the frictional behaviour at the fluid–solid interface. The results reveal that increasing the activation energy parameter reduces the heat transfer rate, while the presence of a binary chemical reaction enhances the mass transfer rate.