Considers the motion of a fluid film squeezed between two rotating parallel plane surfaces in the presence of a magnetic field applied perpendicular to the surfaces. Attention is given to the case where a similarity solution can be obtained. Approximate analytical solutions are given, and a numerical solution to the resulting nonlinear ordinary differential equations is presented. The combined effects of the magnetic forces and the centrifugal inertial forces on the velocity profiles, the load capacity and the torques that the fluid exerts on the surfaces are studied. In general, the results show that these two forces have opposite effects.

https://iopscience.iop.org/article/10.1088/0022-3727/24/4/005/pdf

The magnetohydrodynamic effects on a fluid film squeezed between two rotating surfaces

The squeeze film between rotating porous annular disks

Sliding tests have been carried out using a variety of soft metal and nonmetal pins on a rotating steel disk at speeds up to 150 m/s. A new high-speed friction apparatus in which the normal force, the friction force and the friction coefficient are recorded, was used. In general, the wear rate increased drastically, and the friction coefficient decreased moderately as the sliding speed was raised, these changes being especially pronounced when pin materials of low melting temperature were used. The friction data are in good agreement with those obtained by others using the pin-on-disk geometry. However, although in many cases the interface reached the melting temperature of the lower melting sliding material, the very low friction coefficient values of under 0.05 reported by some investigators were not reached. Presented at the 34th Annual Meeting in St. Louis, Missouri, April 30-May 3, 1979

Friction and Wear at High Sliding Speeds

http://iopscience.iop.org/article/10.1016/0169-5983(96)00002-0/pdf

A. A. McKillop

Papers

An Investigation of the Squeeze Film Between Rotating Annuli

Melt lubrication of an annular thrust surface