Study on the impact of interstage seal inlet and outlet angles on the vortex structure and aerodynamic performance of compressor cascades

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Study reveals that variations in interstage seal angles significantly affect aerodynamic performance and vortex structure in compressor cascades.

Increasing the inlet angle reduces total pressure loss and interstage leakage, improving performance.
The optimal angle of 150° aligns airflow, decreasing corner separation height and enhancing flow capacity.
Variation in outlet angle shifts the airflow pattern, reducing mid-span losses but worsening root vortex performance.
Findings suggest that proper interstage seal design can improve overall aerodynamic efficiency in compressor systems.

Xu et al. (2025) studied this question.

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Study reveals that variations in interstage seal angles significantly affect aerodynamic performance and vortex structure in compressor cascades.