Study of controlled flutter testing in a linear turbine blade cascade

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49193864%3A_____%2F18%3AN0000006" target="_blank" >RIV/49193864:_____/18:N0000006 - isvavai.cz</a>

Výsledek na webu

<a href="https://ojs.cvut.cz/ojs/index.php/APP/article/view/5372/4946" target="_blank" >https://ojs.cvut.cz/ojs/index.php/APP/article/view/5372/4946</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/APP.2018.20.0098" target="_blank" >10.14311/APP.2018.20.0098</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Study of controlled flutter testing in a linear turbine blade cascade

Popis výsledku v původním jazyce

In this paper, experimental testing of flutter and numerical simulations using a commercial code ANSYS CFX and an in-house code TRAF are performed on an oscillating linear cascade of turbine blades installed in a subsonic test rig. Bending and torsional motions of the blades are investigated in a travelling wave mode approach. In each numerical approach, a rig geometry model with a different level of complexity is used. Good agreement between the numerical simulations and experiments is achieved using both approaches and benefits and drawbacks of each technique are commented in this paper. It is demonstrated that both used computational techniques are adequate to predict turbine blade flutter. It is concluded that validated numerical tools can provide a better insight of flutter phenomena of operationally flexible steam turbine last stage blades.

Název v anglickém jazyce

Study of controlled flutter testing in a linear turbine blade cascade

Popis výsledku anglicky

In this paper, experimental testing of flutter and numerical simulations using a commercial code ANSYS CFX and an in-house code TRAF are performed on an oscillating linear cascade of turbine blades installed in a subsonic test rig. Bending and torsional motions of the blades are investigated in a travelling wave mode approach. In each numerical approach, a rig geometry model with a different level of complexity is used. Good agreement between the numerical simulations and experiments is achieved using both approaches and benefits and drawbacks of each technique are commented in this paper. It is demonstrated that both used computational techniques are adequate to predict turbine blade flutter. It is concluded that validated numerical tools can provide a better insight of flutter phenomena of operationally flexible steam turbine last stage blades.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

TURBOMACHINES 2018

ISBN

978-80-01-06521-1

ISSN

2336-5382

e-ISSN

—

Počet stran výsledku

9

Strana od-do

98-107

Název nakladatele

ČVUT v Praze, Acta Polytechnica

Místo vydání

Praha

Místo konání akce

Praha

Datum konání akce

1. 1. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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