A simulation study on the use of synthetic jets for corner separation control on a high-speed compressor stator cascade was conducted. The effect of two jet configurations on flow structures and aerodynamic performance were compared. Results indicated that by periodically blowing and suction

synthetic jets could delay the corner flow separation and reduceing the total pressure loss coefficient significantly. Due to different control effects at different control phases

the loss coefficient at cascade outlet presented a feature of periodic fluctuation. The key for the effectiveness of synthetic jets lied in its control on passage vortex and corner secondary flow. At the incidence angle of 2°

the maximum loss reductions obtained by part-span and full-span configurations were 22.2% and 23.8%

respectively. The part-span configuration could not control the midspan flow

hence the wake loss was higher in this scheme and the control effect was weaker than the full-span one. Both jet configurations showed good adaptation characteristic at off-design conditions

while the full-span configuration could take advantage at relatively large incidence angles. At the incidence angle of 4°

the observed magnitude of total pressure loss coefficient of the full-span configuration was 2.8% higher than that of the part-span one.