Abstract
The oil-air two-phase flow state is formed when the lubricant oil is ejected into the bearing cavity. The 3-D oil-air two-phase flow transient simulation model is built based on the volume of fluid (VOF) method and sliding mesh technique in this research. The two-phase flow field was analyzed. The mixing process of the ejected oil and air was revealed, and the oil-air proportion and distribution were determined. The relationships of the bearing structure, revolution speed and lubrication flow rate with the oil volume fraction were set up. Simulation results show that the oil volume fraction decreases with the increase of revolution speed, and increases with speeding up the lubrication flow rate nonlinearly. The oil-air distribution inside the bearing is non-uniform, which provides a more actual boundary condition for the bearing thermal analysis.
| Original language | English |
|---|---|
| Pages (from-to) | 1022-1025+1041 |
| Journal | Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology |
| Volume | 32 |
| Issue number | 10 |
| Publication status | Published - Oct 2012 |
Keywords
- Jet lubrication
- Rolling bearing
- Two-phase flow
- Volume of fluid (VOF) method