Hemodynamic aspects of the Berlin ventricle assist device

I. Avrahami, S. Einav, M. Rosenfeld, K. Affeld

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


A New Ventricle Assist Device (VAD), with an improved energy converter unit, was investigated both numerically and experimentally. An experimental Continuous Digital Particle Imagining Velocimetry (CDPIV) was combined with a computational fluid dynamics (CFD) analysis. These tools complement each other to result into a comprehensive description of the complex 3D, viscous and time-dependent flow field inside the artificial heart ventricle. A 3D numerical model was constructed to simulate the VAD was performed to predict the flow field inside the VAD during the cardiac cycle. A commercial finite element package (FIDAP, Fluent Inc., Evanston) was used to solve the Navier-Stokes equations. In the experimental analysis, an optically clear elastic model of the VAD was placed inside a 2D CDPIV system. Continuous flow visualization and CDPIV calculations of the flow were used for validating the CFD simulations. Once validated, the CFD results provide a detailed 3D and time dependent description of the flow field, allowing the identification of stagnation or high shear stress regions.

Original languageEnglish
Pages (from-to)468-472
Number of pages5
JournalAnnual Reports of the Research Reactor Institute, Kyoto University
StatePublished - 2001
Externally publishedYes
Event23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Istanbul, Turkey
Duration: 25 Oct 200128 Oct 2001


  • Artificial hearts
  • CFD
  • Cardiovascular flow
  • PIV


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