Zonal Detached Eddy Simulation of Tip Leakage Flow Control in an Axial High Pressure Compressor

In the present study, several control devices have been investigated in the framework of a high pressure compressor rotor using RANS simulations. The analysis of performance maps and of flow predictions leads to select the injection device located up-stream of the rotor tip, at the shroud in order to control the tip leakage flow. The high loss levels are reduced and the radial and azimuthal extension of the high loss area is smaller. Then the chosen flow control technique has been simulated using URANS and ZDES with the IGV passing wakes. The injection technique reduces the loss area and level, energizing and stabilizing the tip leakage vortex thanks to high momentum. So the vortex disruption is removed or at least delayed. Moreover, the influence of IGV passing wakes is reduced.