Experimental and numerical research on combined design of corner separation in compressor

In this manuscript, to simultaneously inhibit multiple causes of corner separation and therefore improve the flow around endwall as much as possible, the combined control by both Full Blended Blade and Endwall (Full-BBEW) and endwall Vortex Generator (VG) are studied. Firstly, a Full-BBEW design is built for a linear cascade and then an combined control is carefully designed by placing a VG in the middle passage of Full-BBEW design. Both numerical and experimental analyses over the entire working condition are performed. Results demonstrate that the combined design significantly reduces overall aerodynamic losses across the full range of design Mach number, with a more pronounced effect observed at high incidence angles. The combined BBEW and VG design provides a comprehensive control strategy that mitigates corner separation and improves endwall flow, resulting in improved aerodynamic performance.