Author(s)

Hong-bin Liu, Gong-ping Liu, Yun-bin Li, L.Wang

Corresponding Author

Hong-bin Liu

Abstract

Based on the model of gas liquid two-phase flow of lubrication oil in bearing chamber, the paper calculates the flow characteristics of the lubricating oil in the simplified model of the high-speed angular contact ball bearing chamber by VOF method and MRF model, obtains the pressure and distribution of lubricant oil. The cause of the influence of the lubricating oil into the chamber and the influence of the rotational speed of the bearing and lubricating oil inlet flow parameters such as the impact on the oil volume fraction are analyzed. The results show that bearing high-speed rotating stage, the two phase flow field in the bearing chamber between the bearing rings has the characteristics of periodic pressure. The volume fraction of the oil in the chamber decreases with the increase of the bearing speed, and is increased with speeding up the lubrication flow rate nonlinearly, which provides a theoretical basis for the design of high DN bearing lubrication.

Keywords

Bearing chamber, air/oil two-phase flow, VOF model, DN value.