Tip-clearance flow and shock-wave interaction in the rotor 37 transonic compressor rotor

摘要

A numerical study has been made on the NASA Rotor 37 transonic compressor rotor with focusing on its tip-clearance flow. By using a high quality multi-block structured grid and the Spalart-Allmaras one equation turbulence model, the more reliablenumerical results reveal the physics of the shock-wave and tip-clearance flow interaction in the high-speed and high-loading compressor rotor. It is found that the tip-clearance jet ejected just upstream of the shock root interacting with the normalshock-wave generates the blockage region downstream of it which has been believed as a result of an interaction between the tip-vortex and the shock-wave.