关键词: 动静耦合, 非定常流动, 离心压气机, 数值模拟, 叶片扩压器, 点磨削 磨削力 模型 新型砂轮

Abstract: Unsteady flow field in centrifugal fan due to rotor/stator interaction under designed condition is studied. The PISO algorithm is applied to solve the kinetic equations with absolute and relative velocities. Compared with the experimental data, the numerical method for unsteady flow is proved to be reliable. Moreover the numerical results illustrate only unsteady scheme can investigate the flow field properly.

Key words: Centrifugal compressor, Numerical simulation, Rotor/stator interaction, Unsteady flow, Vaned diffuser, Point grinding Grinding force Model Novel grinding wheel