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New Exact Solutions for an Oldroyd-B Fluid in a Porous Medium

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  • I. Khan
  • M. Imran
  • K. Fakhar

Abstract

New exact solutions for unsteady magnetohydrodynamic (MHD) flows of an Oldroyd-B fluid have been derived. The Oldroyd-B fluid saturates the porous space. Two different flow cases have been considered. The analytical expressions for velocity and shear stress fields have been obtained by using Laplace transform technique. The corresponding solutions for hydrodynamic Oldroyd-B fluid in a nonporous space appeared as the limiting cases of the obtained solutions. Similar solutions for MHD Newtonian fluid passing through a porous space are also recovered. Graphs are sketched for the pertinent parameters. It is found that the MHD and porosity parameters have strong influence on velocity and shear stress fields.

Suggested Citation

  • I. Khan & M. Imran & K. Fakhar, 2011. "New Exact Solutions for an Oldroyd-B Fluid in a Porous Medium," International Journal of Mathematics and Mathematical Sciences, Hindawi, vol. 2011, pages 1-12, June.
    • Handle: RePEc:hin:jijmms:408132
    DOI: 10.1155/2011/408132
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