Accession Number:

ADA409678

Title:

Hemodynamic Aspects of the Berlin Ventricle Assist Device

Descriptive Note:

Conference paper

Corporate Author:

TEL-AVIV UNIV (ISRAEL) DEPT OF BIOMEDICAL ENGINEERING

Report Date:

2001-10-25

Pagination or Media Count:

6.0

Abstract:

A New Ventricle Assist Device VAD, with an improved energy converter unit, was investigated both numerically and experimentally. An experimental Continuous Digital Particle Imaging 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 pump and a time-dependent CFD analysis with moving walls 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.

Subject Categories:

  • Medicine and Medical Research
  • Medical Facilities, Equipment and Supplies

Distribution Statement:

APPROVED FOR PUBLIC RELEASE