Magnetohydrodynamics and Heat Transfer in Rotating Flows

The motion of a viscous conducting medium caused by the rotation of an extended dielectric disk in an axial magnetic field in the presence of an axial temperature gradient is considered. For the case of a strong magnetic field, the values of the Nusselt number on the disk surface are estimated. A comparison of the obtained results with the well-known data of numerical calculation is made. Based on the calculated profile of the azimuthal velocity of the medium in the boundary layer on the disk, the motion of liquid is investigated in the space between two dielectric disks rotating in the same direction with different angular velocities in the presence of suction and blowing through their solid porous surfaces. The results of calculation of the angular rotational velocities of an inviscid core depending on the suction and magnetic field parameters are given.