Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Fluid-structure interaction study of gas turbine blade vibrations

    Access Status
    Fulltext not available
    Authors
    Forbes, Gareth
    Alshroof, O.
    Randall, R.
    Date
    2010
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Forbes, Gareth and Alshroof, Osama and Randall, Robert. 2010. Fluid-structure interaction study of gas turbine blade vibrations, in Kian Teh, Ian Davies and Ian Howard (ed), 6th Australasian Congress on Applied Mechanics - ACAM 6, Dec 12 2010. Perth, Australia: Engineers Australia
    Source Title
    Proceedings of the 6th Australiasian Congress on Applied Mechanics
    Source Conference
    6th Australiasian Congress on Applied Mechanics
    ISBN
    978-0-85825-941-6
    School
    Department of Mechanical Engineering
    URI
    http://hdl.handle.net/20.500.11937/19584
    Collection
    • Curtin Research Publications
    Abstract

    A recent research program has identified the possibility of using the analysis of casing wall pressures in the direct measurement of gas turbine rotor blade vibration amplitudes.Currently the dominant method of non-contact measurement of gas turbine blade vibrations employs the use of a number of proximity probes located around the engine periphery measuring the blade tip (arrival) time (BTT). Despite the increasing ability of this method there still exist some limitations, viz: the requirement of a large number of sensors for each engine stage, sensitivity to sensor location, difficulties in dealing with multiple excitation frequencies and sensors being located in the gas path. Analytical modelling of the casing wall pressures and reconstruction of rotor blade vibration amplitudes from the analysis of these simulated pressure signals has shown significant improvement over current non-contact rotor blade vibration measurement limitations by requiring only a limited number of sensors and providing robust rotor blade vibration amplitude estimates in the presence of simulated measurement noise. However, this modelling was conducted with some fundamental assumptions about the casing wall pressures being made. One of these assumptions presumed that during blade motion the pressure profile around the rotor blades follows the blade?s motion while it oscillates around its equilibrium position. This assumption is investigated in this paper through the numerical modelling of the fully coupled two-way rotor blade motion and fluid pressure interaction.

    Related items

    Showing items related by title, author, creator and subject.

    • Fluid-structure interaction study of gas turbine blade vibrations
      Forbes, Gareth; Alshroof, O.; Randall, R. (2011)
      A recent research program has identified the possibility of using the analysis of casing wall pressures in the direct measurement of gas turbine rotor blade vibration amplitudes. Currently the dominant method of non-contact ...
    • Gas turbine blade natural frequency measurement using external casing vibrations
      Ratz, Johannes; Forbes, Gareth; Randall, Robert (2013)
      Currently tip timing methods are the pseudo industry standard for measuring Gas Turbine blade vibration. The physical placement of tip timing probes is however reasonably prohibitive due to the high pressure/temperature ...
    • Relationship between the pressure at the casing wall and at the blade tip for a vibrating turbine blade
      Alshroof, O.; Forbes, Gareth; Randall, R. (2010)
      A recent research program has identified the possibility of using the analysis of casing wall pressures in the indirect measurement of gas turbine rotor blade vibration amplitudes [1]. Analytical modelling of the casing ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.