Journal
RESULTS IN PHYSICS
Volume 7, Issue -, Pages 3390-3395Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.rinp.2017.08.052
Keywords
Casson fluid; Variable sheet thickness; Darcy-Forchheimer flow; Homogeneous-heterogeneous reactions; Heat generation/absorption; Thermal radiation
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The present work aims to report the consequences of heterogeneous-homogeneous reactions in Darcy-Forchheimer flow of Casson material bounded by a nonlinear stretching sheet of variable thickness. Nonlinear stretched surface with variable thickness is the main agent for MHD Darcy-Forchheimer flow. Impact of thermal radiation and non-uniform heat absorption/generation are also considered. Flow in porous space is characterized by Darcy-Forchheimer flow. It is assumed that the homogeneous process in ambient fluid is governed by first order kinetics and the heterogeneous process on the wall surface is given by isothermal cubic autocatalator kinetics. The governing nonlinear ordinary differential equations are solved numerically. Effects of physical variables such as thickness, Hartman number, inertia and porous, radiation, Casson, heat absorption/generation and homogeneous-heterogeneous reactions are investigated. The variations of drag force (skin friction) and heat transfer rate (Nusselt number) for different interesting variables are plotted and discussed. (C) 2017 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license
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