LAUSR

Abstract This article reports the heat and mass transfer characteristics in a nonlinear radiative Eyring-Powell nanofluid passing a vertical Riga plate with an exponential varying viscosity in a porous medium. The developed model is influenced by convective surface boundary conditions, viscous dissipation, higher order chemical reaction, Brownian motion as well as thermophoresis effect. The formulated equations are further simplified into dimensionless form by similarity conversion approach while the solution to the resultant equations is found by Galerkin weighted residual method. In the limiting scenarios, the results obtained agree with published works in the open literature while the reactions of the essential controlling parameters are investigated on the dimensionless quantities through various graphs. The analysis reveals that a hike in the modified Hartmann number and the material parameter compels the velocity profiles to escalate whereas the converse is the case with an uplift in the viscosity and porosity parameters. More so, the thermal field shrinks due to a rise in the material parameter while the reaction exponent term boosts the concentration profile.