Chemical reaction and activation energy on heat and mass transfer for convective flow along an inclined surface in darcy porous medium with soret and dufour effects

Abstract

This study investigated the heat and mass that are transferred when a fluid undergoes convective flow along an inclined plate through a porous medium, and also considered the corresponding chemical reaction and activation energy. The influences of the variable viscosity, mixed convection intensity, inclination angle, thermal radiation, magnetic field, internal heat source, activation energy, chemical reaction, and Soret and Dufour effects for fluid flowing through a Darcy porous medium are all discussed. Numerical techniques, namely Runge–Kutta integration and the shooting method, were applied to obtain solutions to similarity-transformed Eqs. governing continuity, momentum, energy, and concentration. The study examined the distributions of flow velocity, temperature, and concentration under the interactive effects of the fluid. The results revealed that the activation energy of the Arrhenius Eq. plays an important role in fluid transport mechanisms within a chemically reactive system involving the Soret and Dufour effects for a low-Schmidt-number fluid. When the activation energy parameter E was greater within the range 0 < E < 5, the wall shear stress was stronger, heat transfer rate increased, and mass transfer rate decreased.