A state-of-art review on the water-lubricated bearing

The paper carries out a detailed summary of water-lubricated bearings from five typical aspects: the lubrication regime, the fluid-solid interaction(FSI), the thermal effect, the tribological behaviors and vibration-noise per-formances. For the lubrication regime, the influencing factors of lubrication regime transition, the judgement criteria and the lubrication mechanism are extracted and acquired. The methodology and the parameters that influencing the temperature rise are summarized. The generation mechanism of tribological behaviors and vi-bration & noise are obtained. The method of friction reduction, wear decrease, vibration alleviation and noise suppression, the judgement criteria of tribological behaviors and vibration & noise are gained. The paper sys-tematically combs and summarizes the theories and methods of water-lubricated bearings, and points out the existing problems and technologies that need to be solved urgently. The findings can provide a distinct theo-retical and methodological reference for further investigation on water-lubricated bearings.