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Passive and Active Methods to Enhance Axial-Flow Compressor Aerodynamics

  • U. Stark
  • H. Saathoff
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 102)

Summary

A review is presented of some previous papers on two control techniques with application to axial-flow compressors. The first technique is a passive technique using stator blades with a forward swept leading edge as a means to prevent an early breakdown of the stator hub flow in a highly loaded single-stage axial-flow low-speed compressor. The second technique is a predetermined technique utilizing rotor tip injection to suppress spike-type stall inception in three single-stage axial-flow low-speed compressors of different design. The first technique is shown to work highly successful, especially at off-design conditions. The second technique is shown to be highly effective in raising the stall limit line. On the other hand, the associated efficiency drop can be significant, so that the injection technique may not be recommended for steady state operation. Injection should only be employed to enhance compressor stability during transient operation that means for a short time period only.

Keywords

ASME Journal ASME Paper Injection Flow Rate Stator Blade Rotating Stall 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • U. Stark
    • 1
  • H. Saathoff
    • 1
    • 2
  1. 1.Institut für StrömungsmechanikTU BraunschweigBraunschweigGermany
  2. 2.Fossil Power Generation DivisionSiemens AG, Energy SectorMülheim

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