LAMINAR MAGNETOHYDRODYNAMIC BOUNDARY LAYER ON A DISK IN THE PRESENCE OF EXTERNAL ROTATING FLOW AND SUCTION

The rotation of a conducting viscous medium near a dielectric disk in a homogeneous magnetic fi eld in the presence
of an external fl ow and a suction is considered. On the basis of the Dorodnitsyn transformation, an analytical solution
of the system of boundary-layer and heat-conduction equations has been obtained. It is shown that the direction of
the radial fl ow in the boundary layer of the disk can be changed by changing the ratio between the angular velocities
of the external fl ow and the disk and the ratio between the temperatures in the external fl ow and on the disk as well
as by varying the hydrodynamic Prandtl number. The infl uence of the magnetic fi eld on the intensity of circulation of
the viscous medium was investigated.
The rotation of a conducting viscous medium near a dielectric disk in a homogeneous magnetic fi eld in the presence
of an external fl ow and a suction is considered. On the basis of the Dorodnitsyn transformation, an analytical solution
of the system of boundary-layer and heat-conduction equations has been obtained. It is shown that the direction of
the radial fl ow in the boundary layer of the disk can be changed by changing the ratio between the angular velocities
of the external fl ow and the disk and the ratio between the temperatures in the external fl ow and on the disk as well
as by varying the hydrodynamic Prandtl number. The infl uence of the magnetic fi eld on the intensity of circulation of
the viscous medium was investigated.
Author:  V. D. Borisevich and E. P. Potanin
Keywords:  rotating disk, magnetic fi eld, suction, boundary layer, conducting gas
Page:  1591