Subsonic stall flutter analysis in 2D blade cascade using hybrid boundary element method
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F20%3A00535111" target="_blank" >RIV/61388998:_____/20:00535111 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Subsonic stall flutter analysis in 2D blade cascade using hybrid boundary element method
Original language description
In this paper study of subsonic stall flutter in the steam turbine blades is carried out. Subsonic stall flutter is one of the dominating and frequently occurring aeroelastic phenomena in large power turbines. The study is carried out by both experimentally and numerically to understand the fundamental physics behind it. Aerodynamics damping (AD) is one of the parameter to analyze the aeroelastic stability of stall flutter in 2D blade cascade. To numerically model the stall flutter in steam turbine a medium fidelity numerical tool is developed. In this research project computationally less expensive potential flow based hybrid boundary element method e.g. panel method, flow model is developed to model the unsteady flow in low pressure turbine blade cascade and to estimate the aeroelastic stability (stall flutter) parameters. Anmodified version panel method using viscous-inviscid coupling including discrete vortex particle (DVM) free wake model can be used for the separated flow conditions as it is in stall flutter case. These methods are widely adopted for aeroelastic modeling of wind turbines, helicopter rotors, and aircraft aeroelasticity problem . The AD for different Inter blade phase angle (IBPA) is estimated using newly developed hybrid BEM based flow model. The estimated AD will be compared with experimental data and CFD results to evaluate the efficiency and the accuracy of the model.n
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20302 - Applied mechanics
Result continuities
Project
<a href="/en/project/TN01000007" target="_blank" >TN01000007: National Centre for Energy</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
EURODYN 2020
ISBN
978-618-85072-0-3
ISSN
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e-ISSN
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Number of pages
11
Pages from-to
213-224
Publisher name
National Technical University of Athens (NTUA)
Place of publication
Athens
Event location
Athény
Event date
Nov 23, 2020
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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