FSI analysis of the blood flow and geometrical characteristics in the thoracic aorta

Hiroshi Suito, Kenji Takizawa, Viet Q H Huynh, Daniel Sze, Takuya Ueda

    Research output: Contribution to journalArticle

    52 Citations (Scopus)

    Abstract

    We present a fluid–structure interaction (FSI) analysis of the blood flow and geometrical characteristics in the thoracic aorta. The FSI is handled with the sequentially-coupled arterial FSI technique. The fluid mechanics equations are solved with the ST-VMS method, which is the variational multiscale version of the deforming-spatial-domain/stabilized space–time (DSD/SST) method. We focus on the relationship between the centerline geometry of the aorta and the flow field, which influences the wall shear stress distribution. The centerlines of the aorta models we use in our analysis are extracted from the CT scans, and we assume a constant diameter. Torsion-free model geometries are generated by projecting the original centerline to its averaged plane of curvature. The flow fields for the original and projected geometries are compared to examine the influence of the torsion.

    Original languageEnglish
    Pages (from-to)1035-1045
    Number of pages11
    JournalComputational Mechanics
    Volume54
    Issue number4
    DOIs
    Publication statusPublished - 2014 Oct 1

    Fingerprint

    Aorta
    Blood Flow
    Blood
    Torsional stress
    Flow Field
    Geometry
    Flow fields
    Interaction
    Interaction Techniques
    Wall Shear Stress
    Computerized tomography
    Fluid Mechanics
    Fluid mechanics
    Torsion-free
    Stress Distribution
    Torsion
    Stress concentration
    Shear stress
    Space-time
    Curvature

    Keywords

    • Aortic aneurysms
    • Blood flow
    • Fluid–structure interaction
    • Sequential coupling
    • Space–time techniques
    • Wall shear stress

    ASJC Scopus subject areas

    • Computational Theory and Mathematics
    • Mechanical Engineering
    • Ocean Engineering
    • Applied Mathematics
    • Computational Mathematics

    Cite this

    FSI analysis of the blood flow and geometrical characteristics in the thoracic aorta. / Suito, Hiroshi; Takizawa, Kenji; Huynh, Viet Q H; Sze, Daniel; Ueda, Takuya.

    In: Computational Mechanics, Vol. 54, No. 4, 01.10.2014, p. 1035-1045.

    Research output: Contribution to journalArticle

    Suito, Hiroshi ; Takizawa, Kenji ; Huynh, Viet Q H ; Sze, Daniel ; Ueda, Takuya. / FSI analysis of the blood flow and geometrical characteristics in the thoracic aorta. In: Computational Mechanics. 2014 ; Vol. 54, No. 4. pp. 1035-1045.
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