Numerical analysis of three-dimensional MHD flow of Casson nanofluid past an exponentially stretching sheet

摘要

The convective three dimensional electrically conducting Casson nanofluid flow over an exponentially stretching sheet embedded in a saturated porous medium and subjected to thermal as well as solutal slip in the presence of externally applied transverse magnetic field (force-at-a-distance) is studied. The heat transfer phenomenon includes the viscous dissipation, Joulian dissipation, thermal radiation, contribution of nanofluidity and temperature dependent volumetric heat source. The study of mass diffusion in the presence of chemically reactive species enriches the analysis. The numerical solutions of coupled nonlinear governing equations bring some earlier reported results as particular cases providing a testimony of validation of the present study. The important findings are reported as Casson fluid contributes to accelerate the processes of momentum diffusivity but decelerates the thermal diffusivity. The effects of respective Biot numbers in temperature and concentration distributions are significant whereas cross effects are not. Further, the existence of chemical reaction stabilizes the characteristics of rate coefficients at the surface.