A Criterion for Axial Compressor Hub-Corner Stall

  title={A Criterion for Axial Compressor Hub-Corner Stall},
  author={V. M. Lei and Z. S. Spakovszky and E. M. Greitzer},
  journal={Journal of Turbomachinery-transactions of The Asme},
This paper presents a new criterion for estimating the onset of three-dimensional hub-corner stall in axial compressor rotors and shrouded stators. A simple first-of-a-kind description of hub-corner stall formation is developed which consists of (i) a stall indicator, which quantifies the extent of the separated region via the local blade loading and thus indicates whether hub-corner stall occurs, and (ii) a diffusion parameter, which defines the diffusion limit for unstalled operation. The… 

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