关键词: 双重时间步方法, 非定常流动, 叶轮机械

Abstract:

The application of the implicit dual time step approach to the prediction of three dimensional unsteady flow through the stage of compressor is presented, and the effects of mesh density and real time step on the simulated results are investigated. The numerical results show that the effect of mesh density and real time step is larger, and there are complex unsteady flow structures in the blade passages.

Key words: dual time step appr oach, unsteady flow, t ur bomachiner y