Subsonic stall flutter analysis in 2D blade cascade using hybrid boundary element method

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Subsonic stall flutter analysis in 2D blade cascade using hybrid boundary element method

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

Subsonic stall flutter analysis in 2D blade cascade using hybrid boundary element method

Popis výsledku anglicky

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

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20302 - Applied mechanics

Projekt

<a href="/cs/project/TN01000007" target="_blank" >TN01000007: Národní centrum pro energetiku</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

EURODYN 2020

ISBN

978-618-85072-0-3

ISSN

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e-ISSN

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Počet stran výsledku

11

Strana od-do

213-224

Název nakladatele

National Technical University of Athens (NTUA)

Místo vydání

Athens

Místo konání akce

Athény

Datum konání akce

23. 11. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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