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Aeroelastic instabilities simulations on turbofan HP compressorblisk at surge-like reversed flow conditions
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Flight Dynamics.
2013 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This paper presents the work done at the High Pressure Compressor design division of Safran Snecma to simulate the flutter behaviour of a compressor blisk at reversed flow conditions. The report states the preliminary phase of modelling the reversed flow on an entire compressor with a stationary simulation and the single blade aeroelastic study results obtained. One can then get interpretations on the blow down aerodynamics that can affect the mechanical behaviour of the blade. Eight simulations of a single blade model have been done on two aeroelastic configurations, each one on a rotor from two different compressor designs. By investigating the airflow around the blade profiles, it becomes possible to get values on the aerodynamic damping on the blade. As presented below, even with strong surge stresses, the compressor stage will remain flutter-free.

Place, publisher, year, edition, pages
2013. , 11 p.
Series
Trita-AVE, ISSN 1651-7660 ; 2013:49
National Category
Aerospace Engineering
Identifiers
URN: urn:nbn:se:kth:diva-129710OAI: oai:DiVA.org:kth-129710DiVA: diva2:653238
Subject / course
Aeronautical Engineering
Examiners
Available from: 2013-10-03 Created: 2013-10-03 Last updated: 2013-10-03Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
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Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
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Output format
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  • asciidoc
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