Journal
EUROPEAN JOURNAL OF MECHANICS B-FLUIDS
Volume 21, Issue 3, Pages 317-324Publisher
GAUTHIER-VILLARS/EDITIONS ELSEVIER
DOI: 10.1016/S0997-7546(02)01184-6
Keywords
non-Newtonian fluids; von Karman swirling flow; similarity solutions; magnetohydrodynamics
Categories
Ask authors/readers for more resources
Magnetohydrodynamic flow of an electrically conducting power-law fluid in the vicinity of a constantly rotating infinite disk in the presence of a uniform magnetic field is considered. The steady, laminar and axi-symmetric flow is driven solely by the rotating disk, and the incompressible fluid obeys the inelastic Ostwald de Waele power-law model. The three-dimensional boundary layer equations transform exactly into a set of ordinary differential equations in a generalized similarity variable. These ODEs are solved numerically for values of the magnetic parameter in up to 4.0. The effect of the magnetic field is to reduce, and eventually suppress, the radially directed outflow. An accompanying reduction of the axial flow towards the disk is observed, together with a thinning of the boundary layer adjacent to the disk, thereby increasing the torque required to maintain rotation of the disk at the prescribed angular velocity. The influence of the magnetic field is more pronounced for shear-thinning than for shear-thickening fluids. (C) 2002 Etditions scientifiques et medicales Elsevier SAS. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available