Active Flow Control on a Highly Loaded Compressor Cascade with Non-steady Boundary Conditions

Abstract

Abstract. This paper discusses the effect of a periodical disturbance in the wake of a highly loaded axial compressor on the pressure distribution and the secondary flow characteristics of the turbo machinery stator blades. A large scale axial compressor cascade, consisting of six two dimensional passages, has been used for this investigation. The test rig is equipped with an active flow control system to enhance the operating range of the compressor. Results that have been achieved by means of side wall actuation are also presented.

A Qualitative Comparison of Unsteady Operated Compressor Stator Cascades with Active Flow Control

“…The respective positions where c p,T E,a f c has been measured is marked with a red circle in Figure 3. These positions have been chosen because the maximum static pressure at the TE is observed there, as shown in [25,26]. For the actuated case the maximum increase in pressure occurs at the same location.…”