| Citation: | SUN Shuxian, ZHOU Ling, ZHU Yichen, et al. Experimental investigation on flow control of corner separation in a compressor cascade[J]. Journal of Aerospace Power, 2025, 40（5）：20220925 doi: 10.13224/j.cnki.jasp.20220925
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Corner separation is an inherent flow instability phenomenon in a compressor cascade, and its control is an important component of strategies to reduce flow loss and improve the aerodynamic performance of compressors. To deepen understanding of flow mechanisms associated with corner separation and techniques for controlling it, three passive control schemes, i.e., blended blade and endwall (BBEW), vortex generator (VG) and their compound control scheme, were designed based on the customized compressor cascade. Particle image velocimetry (PIV) was used to measure the velocity distribution at different attack angles and velocities in a low-speed cascade wind tunnel. The experimental results showed that the designed BBEW control cascade had limited inhibition on corner separation, and it aggravated the separation under some operating conditions. The cascade with VG can disturb and break the separated shear layer by the wake vortices, helping to promote the mixing of the main flow and low energy fluids, enhance the kinetic energy of the separation zone, and effectively restrain the corner separation.
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