Effect of variable uid properties and nth order of chemical reaction on MHD boundary layer ow of upper convected Maxwell fluid past a vertical surface in a doubly stratified porous medium
Date
2019-08
Authors
Olanrewaju, Philip
Oreyeni, T.
Journal Title
Journal ISSN
Volume Title
Publisher
Strathmore University
Abstract
The ow of temperature dependent viscosity and thermal conductivity of free convective MHD
upper convected Maxwell uid over a surface with stratification and nth order of chemical reaction
is considered. It is assumed that buoyancy forces induce a free convection boundary layer in
which the heated fluid rises vertically. The governing partial differential equations are
transformed into non-linear ordinary differential equation by introducing suitable similarity
variables and the approximate analytical solution is obtained through Homotopy Analysis
Method. The effect of some pertinent parameters like Deborah number, stratication, chemical
reaction, and variable thermophysical parameters are presented on velocity, temperature,
concentration distributions to illustrate the details of ow of heat and mass transfer characteristics.
It is observed that for the case of n = 1&2, the concentration of species reduces for increasing
chemical reaction parameter. It is also noticed that, the values of f" (0) decreases while '(0) and
ᴓ(0) increases with increasing Deborah number β
Description
Paper presented at the 5th Strathmore International Mathematics Conference (SIMC 2019), 12 - 16 August 2019, Strathmore University, Nairobi, Kenya
Keywords
Maxwell fluid, Thermo-physical properties;, Chemical reaction, Stratication