The Validation of Flutter Prediction in a Linear Cascade of Non-Rigid Turbine Blades
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F18%3A43954513" target="_blank" >RIV/49777513:23210/18:43954513 - isvavai.cz</a>
Result on the web
<a href="http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2701433" target="_blank" >http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2701433</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1115/GT2018-75502" target="_blank" >10.1115/GT2018-75502</a>
Alternative languages
Result language
angličtina
Original language name
The Validation of Flutter Prediction in a Linear Cascade of Non-Rigid Turbine Blades
Original language description
In low-pressure steam turbines, aerodynamic and structural design of the last stage blades is critical in determining the power plant efficiency. The development of longer last stage blades which are recently over 1 meter in length is an important task for steam turbine manufactures. The design process involves a flutter analysis of last stage blade tip sections where increased unsteady aerodynamic forces and moments might endanger the blade aerodynamic stability. However, numerical design tools must be validated using measurements in test facilities under various operating conditions. In this work, ANSYS CFX is used for flutter prediction of turbine blade tip sections oscillating in a travelling wave mode. Simulations are compared to experimental results obtained from controlled flutter tests in a wind tunnel with a linear cascade of eight turbine blade profiles made of carbon fibre. Central four blades are flexibly mounted each with two degrees of freedom (i.e. bending and torsion motions). Large deflections of thin blade profiles are accounted for the estimation of unsteady aerodynamic forces and moments. A satisfactory agreement between the simulations and experiments is achieved.
Czech name
—
Czech description
—
Classification
Type
D - Article in proceedings
CEP classification
—
OECD FORD branch
20301 - Mechanical engineering
Result continuities
Project
—
Continuities
R - Projekt Ramcoveho programu EK
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of ASME Turbo Expo 2018
ISBN
978-0-7918-5115-9
ISSN
neuvedeno
e-ISSN
neuvedeno
Number of pages
10
Pages from-to
"V07CT36A010", 1-10
Publisher name
ASME
Place of publication
US
Event location
Oslo, Norway
Event date
Jun 11, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000457071100051