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

50 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 - Oct 1 2014

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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