Free convection effects on the oscillatory flow in the Stokes's problem past an infinite porous vertical limiting surface with constant suction. I

Details Free convection effects on the oscillatory flow in the Stokes's problem past an infinite porous vertical limiting surface with constant suction. I Free convection effects on the oscillatory flow in the Stokes's problem past an infinite porous vertical limiting surface with constant suction. I

Jul 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979ap%26ss..63..491g&link_type=abstract

Astrophysics and Space Science, vol. 63, no. 2, July 1979, p. 491-501.

Astronomy and Astrophysics

Astrophysics

7

Free Convection, Oscillating Flow, Porous Walls, Skin Friction, Suction, Graphs (Charts), Prandtl Number, Stellar Atmospheres, Tables (Data), Viscous Fluids

Scientific paper

An analysis of Rayleigh's problem (also Stokes's problem) for the flow of a viscous fluid (e.g. of a stellar atmosphere) past an impulsively started infinite, vertical porous limiting surface (e.g. of a star) with constant suction, when the free stream velocity oscillates in time about a constant mean, has been carried out. On solving the coupled non-linear equations in approximate way, expressions for the mean velocity, the mean temperature, the mean skin-friction and the mean rate of heat transfer, expressed in terms of Nusselt number, are obtained. The effects of Grashof number G, Eckert number E and Prandtl number F, on these quantities, is discussed for the cases of an externally heating and cooling of the limiting surface, by the free convection currents, and the variations of them are shown graphically

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