International Journal of Mathematics and Mathematical Sciences 
Volume 30 (2002), Issue 4, Pages 193-201
doi:10.1155/S0161171202008049

Unsteady flow induced by variable suction on a porous disk rotating eccentrically with a fluid at infinity

A. K. Ghosh,1 S. Paul,1 and Lokenath Debnath2

 1Department of Mathematics, Jadavpur University, Calcutta 700 032, India
2Department of Mathematics, University of Texas-Pan American, 1201 W. University Drive, Edinburg 78539, TX, USA
Received 10 June 2001; Revised 15 November 2001

Abstract

We study the effect of variable suction or blowing on the flow of an incompressible viscous fluid due to noncoaxial rotations of a porous disk and a fluid at infinity. The inquiries are made about the components of fluid velocity and the shear stress at the disk. It is found that the effect of uniform suction or blowing on the flow is enhanced in the presence of variable suction or blowing.