Abstract

The results of simulation research related to the description of the most striking and not yet fully erplained phenomena occurring in the oil film of slide bearings, namely, the oil whiils and whirls have been presented. The calculations were made on the example of a laboratory rotor, based upon two sgpports with flexible external fixing of the bearing shells, and a 200 MW steam turbine rotor as well. The respective initial phases of the oil vibrations development have been determined in details md an attempt has been made to classify the orbits and to find out a practical diagnostic discriminant.