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http://dx.doi.org/10.6112/kscfe.2015.20.2.088

INVESTIGATION ON MECHANICAL AND BIO-MECHANICAL PERFORMANCE OF A CENTRIFUGAL BLOOD PUMP  

Chang, M. (Dept. of Mechanical Engineering, Graduate School, Sogang Univ.)
Moshfeghi, M. (Multi-Phenomena CFD Engineering Research Center(ERC), Sogang Univ.)
Hur, N. (Multi-Phenomena CFD Engineering Research Center(ERC), Sogang Univ.)
Kang, S. (Multi-Phenomena CFD Engineering Research Center(ERC), Sogang Univ.)
Kim, W. (Multi-Phenomena CFD Engineering Research Center(ERC), Sogang Univ.)
Kang, S.H. (Dept. of Mechanical and Aerospace Engineering, Seoul National Univ.)
Publication Information
Journal of computational fluids engineering / v.20, no.2, 2015 , pp. 88-95 More about this Journal
Abstract
Blood pump analysis process includes both mechanical and bio-mechanical aspects. Since a blood pump is a mechanical device, it has to be mechanically efficient. On the other hand, blood pumps function is sensitively related to the blood recirculation; hence, bio-factors such as hemolysis and thrombosis become important. This paper numerically investigates the mechanical and bio-mechanical performances of the Rotaflow in the extracorporeal membrane oxygenation(ECMO), Ventricular Assist Device(VAD), and full-load conditions. The operational conditions are defined as(400[mmHg], 5[L/min.]), (100[mmHg], 3[L/min.]), and (600[mmHg], 10[L/min.]) for ECMO, VAD, and full-load conditions, respectively. The results are presented and analyzed from the mechanical aspect via performance curves, and from bio-mechanical aspect via focusing on hemolytic characteristics. Regions of top and bottom cavities show recirculation in both ECMO and VAD condtions. In addition, Eulerian-based calculation of modified index of hemolysis(MIH) has been investigated. The results demonstrate that the VAD condition has the least risk of hemolysis among the others, while the full-load condition has the highest risk.
Keywords
Centrifugal Blood Pump; CFD; Mechanical Performance; ECMO; VAD; MIH;
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