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Prediction of Turbomachinery Aeroelastic Behavior From a Set of Representative Modes
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
2013 (English)In: Journal of turbomachinery, ISSN 0889-504X, E-ISSN 1528-8900, Vol. 135, no 1, 011032- p.Article in journal (Refereed) Published
Abstract [en]

A method is proposed for the determination of the aeroelastic behavior of a system responding to mode-shapes which are different from the tuned in vacuo ones, due to mistuning, mode family interaction, or any other source of mode-shape perturbation. The method is based on the generation of a data base of unsteady aerodynamic forces arising from the motion of arbitrary modes and uses least square approximations for the prediction of any responding mode. The use of a reduced order technique allows for mistuning analyses and is also applied for the selection of a limited number of arbitrary modes. The application of this method on a transonic compressor blade shows that the method captures the aeroelastic properties well in a wide frequency range. A discussion of the influence of the mode-shapes and frequency on the final stability response is also provided.

Place, publisher, year, edition, pages
2013. Vol. 135, no 1, 011032- p.
Keyword [en]
Aeroelastic behavior, Aeroelastic properties, Least square approximations, Mistuning, Mistuning analysis, Mode shapes, Reduced order, Transonic compressor blades, Unsteady aerodynamic force, Wide frequency range, Aeroelasticity, Perturbation techniques
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-107264DOI: 10.1115/1.4006536ISI: 000312989900032Scopus ID: 2-s2.0-84868118464OAI: oai:DiVA.org:kth-107264DiVA: diva2:575408
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QC 20121210

Available from: 2012-12-10 Created: 2012-12-10 Last updated: 2017-12-07Bibliographically approved

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Mayorca, Maria AngelicaVogt, Damian M.Fransson, Torsten H.
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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
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  • nn-NO
  • nn-NB
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  • Other locale
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Output format
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