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ISSN Imprimer: 2151-4798
ISSN En ligne: 2151-562X
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FLOW PAST POROUS SPHERE COVERED WITH ANOTHER POROUS LAYER OF DIFFERENT PERMEABILITY
RÉSUMÉ
In the present paper, we have studied the slow flow of liquid past a porous sphere covered with another porous layer of different permeability. Flow in the clear region and porous sphere is governed by the Stokes equation and Brinkman equation, respectively. An analytical solution of the problem is obtained by using the continuity of the velocity and stress at the interface of the fluid and the porous region as a boundary condition. An exact solution of the problem is obtained, and streamlines inside and outside the porous composite sphere, radial velocity, and the drag force are shown in graphs for different values of the permeability parameters. The influence of various parameters such as permeability on streamlines and drag force are discussed.
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