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    Stabilized space-time fluid-structure interaction techniques with the continuum element

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    Author
    Cragin, Timothy L.
    Date
    2007
    Advisor
    Tezduyar, Tayfun E.
    Degree
    Master of Science
    Abstract
    We present the methods used to add continuum element functionality to the structure side of our Fluid-Structure Interaction (FSI) solver. The FSI solver, already capable of handling the interaction between membrane structure elements and fluid elements, can now accurately simulate fully 3D structure models as well. A few simple test calculations are presented in order to verify the proper implementation of these changes. Then we aim to establish the effectiveness of these methods by modeling blood flow through a cerebral sacular aneurysm. These computations are performed with three different structural models: linearly-elastic, hyperelastic (Mooney-Rivlin), and Neo-Hookean. Futhermore, each structure model is tested with two different pressure profiles and two different aneurysm thicknesses. Finally, we suggest a procedural change for further investigation: instead of assuming image-based geometry corresponds to zero blood pressure, use that image-based geometry to estimate the zero-pressure arterial geometry.
    Keyword
    Applied mechanics; Biomedical engineering; Mechanical engineering
    Citation
    Cragin, Timothy L.. "Stabilized space-time fluid-structure interaction techniques with the continuum element." (2007) Master’s Thesis, Rice University. https://hdl.handle.net/1911/20497.
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    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
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    Site Map