Based on the model of gas liquid two-phase flow of lubrication oil in bearing chamber

the flow characteristics of the lubricating oil in the simplified model of the high-speed angular contact ball bearing chamber were calculated by volume of fluid (VOF) method and moving reference frame (MRF) model

the velocity

pressure and distribution of lubricant oil were obtained. Then the influence of the rotational speed of the bearing and lubricating oil inlet flow parameters such as the impact on the oil volume fraction were analyzed. The flow path of the lubricating oil in the bearing chamber

and the influence mechanism of the lubricating oil into the cavity were discussed. The results showed that at the bearing high-speed rotating stage

with the agitation of the lubricant and the cage was formed in the chamber. The two phase flow field in the bearing chamber between the bearing rings pressure had the periodic characteristics

spray lubricating oil was difficult to enter the cavity through the pressure between rings. The volume fraction of the oil in the chamber nonliear decreased with the increase of the bearing speed

and increased with oil supply. Injection angles had a great influence on the bearing chamber and bearing raceway of the oil volume fraction

and choosing the appropriate angle can get better lubricating effect. The results of this study provide some reference for the design of high speed bearing oil spray lubrication system.