Abstract: | The flow of a viscous fluid in the narrow gap between two rapidly rotating coaxial cones has been examined in [1]. A similar motion takes place between the plates of a separator in various branches of engineering for the separation of emulsions and clarification of suspensions. The laminar flow regime is necessary for normal operation of the plate separator. The present paper studies the hydrodynamic stability of the interplate flow and suggests a specific criterion which is consistent with the practice of the design and operation of separators and which has a simple physical meaning. |