Investigations into the pressure and velocity fields for the air in an aero-engine bearing chamber were conducted using the finite element numerical method and experimental study. The influence of the operating parameters

such as the rotor speeds and the sealing air mass flow rates

on the pressure and velocity distributions of air in bearing chamber was discussed. The research results show preliminarily that the air pressure in bearing chamber mounts up with the increasing rotor speeds

nondimensional radial coordinate and sealing air mass flow rates. In contrast

the nondimensional tangential velocity of air in bearing chamber increases with the enhanced rotor speeds

and decreases with the increasing sealing air mass flow rates. The experiment results show that as the rotor speeds or the sealing air mass flow rates increase

the experimental data of air pressures agree more with the computational results. The operating parameters from computational and experiment can contribute to further complete the research on aspects of the air in bearing chamber.