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NUMERICAL SIMULATION FOR BIVISCOSITY FLUID FLOW THROUGH A POROUS MEDIUM UNDER THE EFFECTS OF VARIABLE PROPERTIES

Volumen 3, Ausgabe 1, 2012, pp. 1-11
DOI: 10.1615/SpecialTopicsRevPorousMedia.v3.i1.10
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ABSTRAKT

In this article, in the study of non-Newtonian fluid flow, heat and mass transfer underlying an axisymmetric spreading surface through a porous medium is analyzed numerically via the Chebyshev pseudospectral method. This flow is studied by using a biviscosity model with the assumption of variable properties, viscosity and thermal conductivity. The similarity solution is used to transform the problem into a boundary value problem of nonlinear coupled ordinary differential equations. Numerical results are carried out for various physical values of the dimensionless parameters describing the flow. The effects of permeability of porous medium, variable viscosity, variable thermal conductivity, and non-Newtonian property of fluid on the distributions of velocity of spreading, temperature and concentration as well as the local skin friction and the local Nusselt and Sherwood numbers are shown in tabular form and graphically.

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