Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
The influence of non-equilibrium wet steam effects on the aeroelastic properties of a turbine blade row
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.
2016 (English)In: Proceedings of the ASME Turbo Expo, ASME Press, 2016Conference paper, Published paper (Refereed)
Abstract [en]

Turbine blade flutter is a concern for the manufacturers o steam turbines. Typically, the length of last stage blades of larg steam turbines is over one meter. These long blades are susceptibl to flutter because of their low structural frequency an supersonic tip speeds with oblique shocks and their reflections Although steam condensation has usually occurred by the las stage, ideal gas is mostly assumed when performing flutter analysi for steam turbines The results of a flutter analysis of a 2D steam turbine tes case which examine the influence of non-equilibrium wet stea are presented. The geometry and flow conditions of the test cas are supposed to be similar to the flow near the tip in a stea turbine as this is where most of the unsteady aerodynamic wor contributing to flutter is done. The unsteady flow simulation required for the flutter analysis are performed by ANSYS CFX Three fluid models are examined: ideal gas, equilibrium we steam (EQS) and non-equilibrium wet steam (NES), of whic NES reflects the reality most Previous studies have shown that a good agreement betwee ideal gas and EQS simulations can be achieved if the prescribe ratio of specific heats is equal to the equilibrium polytropic inde of the wet steam flow through the turbine.

Place, publisher, year, edition, pages
ASME Press, 2016.
Keywords [en]
Aerodynamics, Flutter (aerodynamics), Gas turbines, Steam, Steam condensers, Steam turbines, Turbine components, Turbines, Turbomachinery, Aeroelastic properties, Flutter analysis, Last stage blades, Non equilibrium, Steam condensation, Structural frequencies, Three-fluid model, Unsteady aerodynamics, Turbomachine blades
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-195485DOI: 10.1115/GT2016-57899ISI: 000385467300079Scopus ID: 2-s2.0-84991380486ISBN: 9780791849866 (print)OAI: oai:DiVA.org:kth-195485DiVA, id: diva2:1047790
Conference
ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition, GT 2016, 13 June 2016 through 17 June 2016
Note

QC 20161118

Available from: 2016-11-18 Created: 2016-11-03 Last updated: 2016-11-18Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records BETA

Petrie-Repar, Paul

Search in DiVA

By author/editor
Petrie-Repar, Paul
By organisation
Heat and Power Technology
Mechanical Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
isbn
urn-nbn

Altmetric score

doi
isbn
urn-nbn
Total: 208 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf