Open AccessEffect of radiation with temperature dependent viscosity and thermal conductivity on unsteady a stretching sheet through porous media
Author(s) -
M. Modather M. Abdou
Publication year - 2010
Publication title -
nonlinear analysis modelling and control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.734
H-Index - 32
eISSN - 2335-8963
pISSN - 1392-5113
DOI - 10.15388/na.15.3.14322
Subject(s) - nusselt number , thermal conductivity , porous medium , mechanics , viscosity , materials science , thermal radiation , boundary layer , thermodynamics , heat transfer , thermal conduction , radiative transfer , heat flux , porosity , physics , composite material , optics , reynolds number , turbulence
. A numerical model is developed to study the effect of thermal radiation on unsteady boundary layer flow with temperature dependent v iscosity and thermal conductivity due to a stretching sheet in porous media. The R osseland diffusion approximation is used to describe the radiative heat flux in t he energy equation. The governing equations reduced to similarity boundary layer e quations using suitable transformations and then solved using the Runge–Kutta nume rical integration, procedure in conjunction with shooting technique. A parametric study illustrating the influence of the radiationR, variable viscosityε, Darcy numberDa, porous media inertia coefficientγ, thermal conductivityκ and unsteadyA parameters on skin friction and Nusselt number.
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