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Stall margin improvement (SMI) curve is a function of a single groove location for a low-speed axial compressor and is investigated numerically and experimentally in this paper. SMI curve illustrates that good grooves are located in a fairly wide region approximately from 30% Cax to 80% Cax aft of the rotor leading edge. The narrow region that contains bad grooves is near 20% Cax aft of the rotor...
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