Squeeze Films between Electrically Conducting Plates

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Abstract
Hydromagnetic squeeze films between electrically conducting plates have been investigated theoretically. In these investigations the problems of inflnitely long rectangular plates with an applied magnetic field parallel to the plates, and circular plates with an axial current have been considered. The relations between the time of approach and the film thickness have been derived. For rectangular plates, it has been shown that the squeezing in a short circuit system is slower than that in an open circuit system. In both systems the time of approach increases with the Hartmann number. For circular plates, it has been shown that the time of approach increases with applied electric currents. The time-height relation has been given for the case of a circular plate with a concentric hole in it.