Stagnation point MHD slip-flow of viscoelastic nanomaterial over a stretched inclined cylindrical surface in a porous medium with dual stratification

Abstract

This communication discusses the magnetohydrodynamic (MHD) Stagnation point flow of a viscoelastic nanofluid past an inclined cylinder stretching linearly. A modified Darcy's law with the effect of Arrhenius activation energy is considered. The cylinder wall is both thermally and concentration-wise stratified, the fluid is electrically conducting and under a uniform magnetic field. Reduction of the PDEs boundary value problem to ODEs and solutions of the resulting equations are obtained by employing similarity transformations as well as Spectral Local Linearization Method (SLLM). The effects of apposite parameters on the fluid velocity, temperature and concentration are discussed through graphs. Similarly, their effects on the skin-friction coefficient, Nusselt and Sherwood numbers are elucidated via tables. There is the emergence of the modified Darcy parameter and it reduced the nanofluid velocity and depleted the thickness of the boundary layer. Both thermal and solutal stratified parameters were seen to dilute the species concentration within the flow system. Furthermore, the activation energy enhanced the species concentration levels of the nanofluid.