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    Stability of a Flexible Wall Separating Two Inviscid Channel Flows

    Access Status
    Fulltext not available
    Authors
    Burke, Meagan
    Lucey, Anthony
    Elliott, Novak
    Howell, Richard
    Date
    2013
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Burke, Meagan A. and Lucey, Anthony D. and Elliott, Novak S.J. and Howell, Richard M. 2013. Stability of a Flexible Wall Separating Two Inviscid Channel Flows, in Nitzel, M.E. et al (ed), Proceedings of the ASME 2013 Pressure Vessels and Piping Conference, Jul 14-18 2013. Paris, France: ASME International.
    Source Title
    Proceedings of the ASME 2013 Pressure Vessels & Piping Division Conference (PVP2013)
    Source Conference
    ASME 2013 Pressure Vessels and Piping Conference
    DOI
    10.1115/PVP2013-97373
    ISBN
    978-0-7918-5568-3
    URI
    http://hdl.handle.net/20.500.11937/27753
    Collection
    • Curtin Research Publications
    Abstract

    The stability of a finite flexible wall occupying part of a rigid wall that separates two inviscid channel flows is investigated. The two-dimensional system is solved using a boundary-element method coupled with a finite-difference method. The motion of the wall is driven by the transmural pressure while the no-flux condition at the wall provides the kinematic boundary condition for each of the flows. Flows and structure are fully coupled to yield a system equation that is then transformed into state-space form so that its eigenvalues can be analysed. The flow velocities at which divergence and modal-coalescence flutter of the flexible wall occur are then determined as are mode shapes. We show that decreasing the channel heights and increasing the fluid density causes instabilities to occur at lower flow velocities. When the channels flow in opposite directions it is possible to suppress modal-coalescence of the first two modes.

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