Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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INVESTIGATION ON MECHANICAL AND BIO-MECHANICAL PERFORMANCE OF A CENTRIFUGAL BLOOD PUMP

혈액 펌프의 기계적 성능과 생체 역학적 성능에 대한 연구

  • 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.)
  • 장민욱 (서강대학교 대학원 기계공학과) ;
  • ;
  • 허남건 (서강대학교 다중현상 CFD 연구센터) ;
  • 강성원 (서강대학교 다중현상 CFD 연구센터) ;
  • 김원정 (서강대학교 다중현상 CFD 연구센터) ;
  • 강신형 (서울대학교 기계항공공학부)
  • Received : 2015.05.20
  • Accepted : 2015.06.29
  • Published : 2015.06.30
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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.

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References

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