Oscillatory motion of an electrically conducting viscoelastic fluid over a stretching sheet in a saturated porous medium with suction/blowing

Rajagopal, K.; Veena, P. H.; Pravin, V. K.

doi:https://doi.org/10.1155/MPE/2006/60560

Mathematical Problems in Engineering

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Volume 2006 | Article ID 060560 | https://doi.org/10.1155/MPE/2006/60560

Oscillatory motion of an electrically conducting viscoelastic fluid over a stretching sheet in a saturated porous medium with suction/blowing

K. Rajagopal,¹P. H. Veena,²and V. K. Pravin³

Received21 Apr 2004

Revised21 Feb 2005

Accepted19 May 2005

Published27 Mar 2006

Abstract

The effect of an oscillatory motion of a viscoelastic fluid over an infinite stretching sheet through porous media in the presence of magnetic field with applied suction has been studied. The surface absorbs the fluid in a porous medium in the presence of magnetic field and the velocity oscillates depending on the stretching rate (b). Analytical expressions for the velocity and the coefficient of skin friction have been studied, first by the perturbation method and then by power series method. The effect of viscoelastic parameter k1, porous parameter k2, magnetic parameter Mn, and the vertical distance x in the presence of suction/blowing on the velocity and the flow characteristics are discussed. The velocity of the viscoelastic fluid is found to decrease in the presence of magnetic field and porous media, as compared to the study of viscous fluid. It is also found that the effect of unsteadiness in the wall velocity and skin friction are found to be appreciable in the presence of suction/blowing parameter.

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Copyright © 2006 K. Rajagopal et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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