Computational fluid mechanics of the blood flow in an aortic vessel with realistic geometry

  • Hideki Fujioka
  • Kazuo Tanishita


The intermittent and developing flow through a physiologically realistic model of an aortic arch was analyzed by solving the three dimensional Navier-Stokes equations numerically. The flow solver implemented the SIMPLER algorithm on a structured mesh. The model geometry was described by a set of formulas based on physiological data, obtained from Computed Tomography images. The results show that during diastole a secondary flow vortex with clockwise rotation is formed in the upper aortic arch, whilst in the descending aortic arch a counter-clockwise secondary flow vortex is formed. Both there vortices were still present at late systole. The most noticeable effect of the non-planarity of the geometry is in moving the stagnation point of the secondary flow around the inner wall. In turn, this cause large variation of wall shear stress direction in a narrow region.


Wall Shear Stress Aortic Arch Secondary Flow Model Geometry Oscillatory Shear Index 
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Copyright information

© Springer Japan 2000

Authors and Affiliations

  • Hideki Fujioka
    • 1
  • Kazuo Tanishita
    • 2
  1. 1.Department of Biological and Medical SystemsImperial College of Science, Technology and MedicineLondonUK
  2. 2.Department of System Design EngineeringKEIO UniversityYokohamaJapan

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