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    Coupled fluid-structure interactions using the fast multipole method

    183021.pdf (784.9Kb)
    Access Status
    Open access
    Authors
    Wilkes, Daniel
    Duncan, Alexander
    Date
    2011
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Wilkes, Daniel R. and Duncan, Alec J. 2011. Coupled fluid-structure interactions using the fast multipole method, in D.J. Mee and I.D.M. Hillock (ed), Proceedings of Acoustics 2011: Breaking New Ground, Nov 2-4 2011, pp. 1-12. Gold Coast, Qld.: Australian Acoustical Society.
    Source Title
    Acoustics 2011: Breaking New GroundProceedings of the Annual Conference of the Australian Acousticial Society
    Source Conference
    Acoustics 2011: Breaking New Ground
    ISBN
    978-0-9757855-8-4
    School
    Centre for Marine Science & Technology (COE)
    Remarks

    Copyright © 2011 The Australian Acoustical Society

    URI
    http://hdl.handle.net/20.500.11937/23836
    Collection
    • Curtin Research Publications
    Abstract

    The interaction of sound with an arbitrarily shaped underwater object must in general be treated as a coupled interaction between the fluid and structure, due to the acoustic impedance properties of water. Typically, this type of problem is solved by building a numerical model of the exterior fluid and interior solid regions and then simultaneously solving the coupled system of equations, on the common fluid-structure interface. These models are restricted by their high cost in terms of computational time and memory. The fast multi pole method (FMM) significantly reduces these requirements and is applicable to many types of boundary integral equations. For simple structures, a coupled model using the FMM for both the fluid and structure will provide a substantial increase in the possible model size or frequency limit compared to traditional methods. This paper discusses stich a model and presents initial non-coupled results in the form of acoustic scattering and target strength results for the rigid BeTSSi submarine model.

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