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

Astronomy and Astrophysics – Astrophysics

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Free Convection, Incompressible Flow, Oscillating Flow, Porous Walls, Suction, Viscous Flow, Air Flow, Skin Friction, Two Dimensional Flow, Wall Flow, Water Flow

Scientific paper

This work presents a two-dimensional free convection flow of an incompressible viscous fluid past an infinite vertical limiting surface (porous wall) for the Stokes' problem when the fluid is subjected to a constant suction velocity. The flow is normal to the porous wall and the free stream oscillates about a mean value. As the mean steady flow has been presented in Part I, only the solutions for the transient velocity profiles, transient temperature profiles, the amplitude and the phase of the skin friction, and the rate of heat transfer are presented in this work. As in the case of mean steady flow, the influence of the Grashof number G and Eckert number E on the unsteady flow field is discussed for air (P = 0.71) and water (P = 7) and for the cases of externally heating and cooling the porous limiting surface by free convection currents.

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