Three-Dimensional Flow Through a Compressor Cascade With Circulation Control

A compressor cascade with active circulation control at the trailing edge of the blades is presented. The main objective of the current work is to investigate the influence of the active blowing on the three dimensional flow field. Furthermore the estimation of the blowing efficiency is of great interest and will be considered in detail. Navier-Stokes simulations have been conducted and compared to low-speed wind tunnel measurements. With the particular measurement techniques (five-hole-probe measurements and particle image velocimetry) significant three-dimensional flow details are accessible. Further details near the trailing edge are analysed by PIV-measurements at different spanwise positions. These measurements show a good jet quality over the blade span.