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Volume & Issue no: Volume 3, Issue 4, July - August 2014

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Title:
Thermal radiation effect on an unsteady hydromagnetic free convective oscillatory Couette flow of a viscous fluid embedded in a porous medium
Author Name:
K Rama rao, M V Ramana Murthy & S Harisingh Naik
Abstract:
Abstract: This paper investigates the effect of thermal radiation on an unsteady magnetohydrodynamic free convective oscillatory Couette flow of an optically, viscous thin fluid bounded by two horizontal porous parallel walls under the influence of an externalimposed transverse magnetic field embedded in a porous medium.The fluid is considered to be a gray, absorbing – emitting but non – scattering medium and the Rosseland approximation is used to describe the radiative heat flux in the energy equation. The non – dimensional governing coupled equations involved in the present analysis are solved by an efficient, accurate, and extensively validated and unconditionally stable finite difference scheme of the Crank Nicolson method and the expressions for velocity, temperature, Skin friction and rate of heat transfer has been obtained.Numerical results for velocity and temperatureare presented graphically and the numerical values of Skin friction and Nusselt numberhave been tabulated.The effect of different parameters like thermal Grashof number, Magnetic field (Hartmann number), Prandtl number, Porosity parameter and Thermal radiation parameteron the velocity, temperature, Skin friction and Nusselt number are discussed. Keywords: Thermal radiation, MHD, Free convection, Couette flow, Periodic wall temperature and Finite difference method.
Cite this article:
K Rama rao, M V Ramana Murthy & S Harisingh Naik , " Thermal radiation effect on an unsteady hydromagnetic free convective oscillatory Couette flow of a viscous fluid embedded in a porous medium " , International Journal of Emerging Trends & Technology in Computer Science (IJETTCS) , Volume 3, Issue 4, July - August 2014 , pp. 006-012 , ISSN 2278-6856.
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International Journal of Emerging Trends & Technology in Computer Science (IJETTCS)
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