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, 79 (3), 253-61

Calculation of Pulsatile Flow and Particle Paths in an Aneurysm-Model

Calculation of Pulsatile Flow and Particle Paths in an Aneurysm-Model

K Perktold et al. Basic Res Cardiol.

Abstract

The velocity field and the wall shear stress have been calculated numerically by the finite element method to the time-dependent Navier-Stokes equations for pulsatile flow in a model of an aneurysm. The results show a complex flow field with two eddies growing and disappearing during the cardiac cycle. Downstream at the outlet vessel high wall shear stress occurs, which may lead to a downstream-growing of the aneurysm. With the knowledge of a sufficiently accurate flow field, the calculation of several particle paths has been carried out. Starting points and starting time are varied. The paths demonstrate the time-dependent development, shift and disappearance of vortices during the pulsatile cycle and provide hints on zones of stasis. These are significant factors in thrombogenesis.

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Cited by 3 PubMed Central articles

References

    1. Pharmacol Rev. 1978 Sep;30(3):293-331 - PubMed

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