Detached Eddy Simulation for the Stator-Rotor Interaction of the Compressor High-Pressure Cascade

The potential of predicting stator-rotor interaction of detached eddy simulation (DES) was researched by applying it to simulate high Reynolds-number complex flows of compressor high-pressure cascade. By developing the full-matching grid method and incorporating multi-block into one block, the stator-rotor interface is treated for high-accuracy and large-scale-parallel at first. Then, DES and S-A simulation were employed to study the interaction between the stator and the rotor on approximately six million grids. Results show that DES has better capability to describe the structures of flow field than S-A. Compared with S-A, DES obtains the approximate same results from 20% span to 80% span, but predicts obvious lower loss near the hub because of the similar mechanism as "clocking", and higher loss near the shroud because of stronger tip leakage flows.