Based on aerodynamics

the airflow characteristics between bearing rings of high-speed bearings were researched. And the movement process of the lubrication oil between bearing rings was analyzed by establishing the mathematical model of gas phase flow and gas-liquid two-phase flow

so as to explore the penetration mechanism of the lubrication oil at a high DN value. The original data of the gas-liquid two-phase flow between bearing rings were obtained. And then

the VOF (volume of fluid) model was applied to numerical analysis on the gas-liquid two-phase flow of lubrication oil interacting with the airflow between the bearing rings

so as to catch the interface of the oil and airflow for studying the movement process

the distribution characteristics of lubrication oil and the effects of different parameters on oil volume fraction between bearing rings. The characteristics of the gas phase flow between rings of high-speed rolling bearing

the motion of lubrication oil in different speeds

the pressure and velocity characteristics of the gas-liquid two-phase flow and the effects of the initial airflow on the entrance of the lubrication oil were obtained. Results show that the effect and the interference of turbulence on the lubricating oil can be avoided by jetting oil onto the small end face of bearing near bearing inner race

which is conducive to the oil flow into the ring. The radial force of the air flow between bearing rings is beneficial to the movement of the lubricating oil

and with the increase of the speed

the force increases linearly. The initial state of the air flow affects the movement of the oil between bearing rings

and the oil has little effect on the movement of the air flow. At low speed

the pressure around the bearing change is small. When the speed is high

the periodic fluctuation pressure can not be ignored. At low speed

increasing oil volume flow can effectively raise the oil volume fraction between bearing rings

but at high speed

the oil volume fraction increase is not obvious by increasing oil volume flow.