Free convection and mass transfer in the hydromagnetic oscillatory flow past an infinite vertical porous plate with internal heat generation due to radiation absorption

Astronomy and Astrophysics – Astrophysics

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Free Convection, Magnetohydrodynamic Flow, Mass Transfer, Oscillating Flow, Porous Plates, Radiation Absorption, Boundary Value Problems, Flow Velocity, Heat Flux, Laminar Boundary Layer, Skin Friction, Unsteady Flow

Scientific paper

The influence of radiation absorption on the flow-field of an unsteady laminar boundary layer due to free convection is considered. The flow is that of an incompressible viscous dissipative and electrically conducting fluid past an infinite vertical porous plate, when the flow is subjected to the action of a transverse magnetic field and the mainstream is oscillating around a mean value and an oscillating suction. The radiation is absorbed by a second material in a small concentration within the fluid and the absorption rate is proportional to the local concentration. The solution of the problem is obtained in the form of power series of Eckert number E, analytical expression for the velocity, temperature and the induced magnetic field are given for both the steady and the unsteady flows. In addition, the influence of the absorption on the skin friction of the heat flux is given.

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