Chemical reaction impact on MHD natural convection flow through porous medium past an exponentially stretching sheet in presence of heat source/sink and viscous dissipation

This study investigates the viscous dissipation impact on free convection MHD flow through a porous medium over an exponentially stretching surface in presence of chemical reaction. The basic governing PDEs are converted into non-linear ODE's by using similarity transformations and then using the Keller-box method, numerical solutions are obtained. The flow features of boundary layers along with the bounding surface are identified and analysed using diagrams. It is noted that the increase in the Eckert number, Radiation and Magnetic parameter (M) increases the temperature profiles, while the increase in the chemical reaction parameter, porosity and Schmidt number decreases the concentration profile. To validate the results, a comparative study between the present study and previously published results for a particular case is conducted and good agreement is found between them.

Automated summary

This study investigates the impact of viscous dissipation on free convection MHD flow through a porous medium over an exponentially stretching surface in the presence of a chemical reaction. Numerical solutions are obtained using the Keller-box method after converting the governing PDEs to non-linear ODEs. The study shows that increasing the Eckert number, Radiation, and Magnetic parameter (M) increases temperature profiles, while increasing the chemical reaction parameter, porosity, and Schmidt number decreases concentration profiles. Validation of the results through comparative study with previously published results shows good agreement.