Experiments in Fluids

, 55:1746

Multi-time-lag PIV analysis of steady and pulsatile flows in a sidewall aneurysm

  • P. Bouillot
  • O. Brina
  • R. Ouared
  • K. O. Lovblad
  • V. Mendes Pereira
  • M. Farhat
Research Article

DOI: 10.1007/s00348-014-1746-0

Cite this article as:
Bouillot, P., Brina, O., Ouared, R. et al. Exp Fluids (2014) 55: 1746. doi:10.1007/s00348-014-1746-0

Abstract

The effect of inflow waveform on the hemodynamics of a real-size idealized sidewall intracranial aneurysm (IA) model was investigated using particle imaging velocimetry (PIV). For this purpose, we implemented an error analysis based on several PIV measurements with different time lags to ensure high precision of velocity fields measured in both the IA and the parent artery. The relative error measured in the main part of the circulating volume was <1 % despite the three orders of magnitude difference of parent artery and IA dome velocities. Moreover, important features involved in IA evolution were potentially emphasized from the qualitative and quantitative flow pattern comparison resulting from steady and unsteady inflows. In particular, the flow transfer in IA and the vortical structure were significantly modified when increasing the number of harmonics for a typical physiological flow, in comparison with quasi-steady conditions.

Supplementary material

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Supplementary material 1 (avi 2337 KB)
348_2014_1746_MOESM2_ESM.avi (2.3 mb)
Supplementary material 2 (avi 2343 KB)
348_2014_1746_MOESM3_ESM.avi (2.3 mb)
Supplementary material 3 (avi 2341 KB)

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • P. Bouillot
    • 1
    • 2
  • O. Brina
    • 1
  • R. Ouared
    • 1
  • K. O. Lovblad
    • 1
  • V. Mendes Pereira
    • 1
  • M. Farhat
    • 2
  1. 1.Interventional Neuroradiology Unit, Service of NeuroradiologyUniversity Hospitals of GenevaGenevaSwitzerland
  2. 2.Laboratory for Hydraulic Machines (LMH)École Polytechnique Fédérale de Lausanne (EPFL)LausanneSwitzerland