In order to search a reasonable numerical model to simulate the flowing characteristic of the oil-air two-phase flow in a bearing chamber,a simplified test rig was set up.Various rules of air flow proportion at the vent and oil temperature rise at the scavenger under different operating conditions were obtained through this experimental investigation.Based on Mixture multiphase model and Eulerian multiphase model with standard k-ε turbulence model and RNG(renormalization group) k-ε turbulence model respecti...