Numerical Investigations on the Rotating Stall in an Axial Compressor and Its Control by Flow Injection at Casing

Abstract The operating range of a compressor is limited by surge or rotating stall line, among others. Numerical simulations must accurately predict these phenomena. This study based on the experimental CME2, which low-subsonic axial compressor. tip-critical as rotor tip responsible for stall. paper shows that onset flow rate well captured computational fluid dynamics, compared to experiments. After ten revolutions, all cells are merged and only one cell remains, in Active control improves performance extends stable range. In present configuration, injection performed at casing. simulation, insertion actuators carried out through hybrid meshes: structured mesh blade passages unstructured each actuator. For some stalled points baseline there no controlled configuration. Thus, delayed lower rate, expected use active agreement with