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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