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Flow of Magnetohydrodynamic Micropolar Fluid Induced by Radially Stretching Sheets

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Flow of Magnetohydrodynamic Micropolar Fluid Induced by Radially Stretching Sheets

Tasawar Hayata,b, Muhammad Nawaza, and Awatif A. Hendib

aDepartment of Mathematics, Quaid-I-Azam University 45320, Islamabad 44000, Pakistan

bDepartment of Physics, Faculty of Science, King Saud University, P. O. Box. 1846, Riyadh 11321, Saudi Arabia

Reprint requests to T. H.; E-mail: pensy t@yahoo.com

Z. Naturforsch.66a,53 – 60 (2011); received March 5, 2010 / revised June 5, 2010

We investigate the flow of a micropolar fluid between radial stretching sheets. The magnetohydro- dynamic (MHD) nonlinear problem is treated using the homotopy analysis method (HAM) and the velocity profiles are predicted for the pertinent parameters. The values of skin friction and couple shear stress coefficients are obtained for various values of Reynolds number, Hartman number, and micropolar fluid parameter.

Key words:Micropolar Fluid; Radial Stretching; Homotopy Analysis Solution;

Skin Friction Coefficient; Couple Stress Coefficient.

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