Heat transfer in a liquid film over an unsteady stretching surface with the effects of viscous dissipation, thermal radiation and non-uniform heat source in the presence of external magnetic field

• Autorzy: Abel. M. S. , Tawade J. V.
• Języki publikacji: EN

Abstrakty

EN

This paper presents a mathematical analysis of an MHD flow and heat transfer to a laminar liquid film from a horizontal stretching surface. The flow of a thin fluid film and subsequent heat transfer from the stretching surface is investigated with the aid of similarity transformation. The transformation renders it possible to reduce the unsteady boundary layer equations to a system of non-linear ordinary differential equations. A numerical solution of the resulting nonlinear differential equations which agrees well with the analytic solution, is obtained by the efficient shooting technique. The effects of boundary layer thickness on various physical parameters such as the unsteadiness parameter S and magnetic parameter Mn, Prandtl number Pr, Eckert number Ec, thermal radiation parameter Nr and non-uniform heat source/sink parameters which determine the temperature profiles, the heat transfer coefficient are tabulated and plotted in figures. It is shown that the heat fluxes from the liquid to the elastic sheet decreases with S for […] and increases with S for […]. Some important findings reported in this work reveal that the combined effect of thermal radiation and non-uniform heat source have significant impact on controlling the rate of heat transfer in the boundary layer region.

Słowa kluczowe

EN

liquid film; unsteady stretching surface; viscous dissipation; Prandtl number; magnetic parameter; non-uniform heat source; thermal radiation; Eckert number

PL

powierzchnia rozciągania; źródła ciepła; promieniowanie cieplne

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2010
• Tom: Vol. 15, no 4
• Strony: 967--992
• Opis fizyczny: Bibliogr. 44 poz., tab., wykr.

Twórcy

autor

Abel. M. S.

autor

Tawade J. V.

• Department of Mathematics, Gulbarga University Gulbarga- 585 106, Karnataka, INDIA,

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