대한기계학회:학술대회논문집 (Proceedings of the KSME Conference)
- 대한기계학회 2002년도 학술대회지
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- Pages.703-704
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- 2002
부유식 폴리머 인공심장 밸브의 축대칭 혈류 해석
Axisymmetric analysis of blood flow for a floating type polymer artificial heart valve
- 성현찬 (금오공과대학교 대학원) ;
- 정기석 (금오공과대학교 대학원) ;
- 김경훈 (금오공과대학교 기계공학부) ;
- 고형종 (금오공과대학교 기계공학부) ;
-
박찬영
(서울대학교 의공학과) ;
- 민병구 (서울대학교 의공학과) ;
- 심은보 (금오공과대학교 기계공학부)
- Seong H. C. ;
- Jung K. S. ;
- Kim K. H. ;
- Ko H. J. ;
-
Park C. Y.
;
- Min B. G. ;
- Shim E. B.
- 발행 : 2002.08.01
초록
The two major problems related to the blood flow in a floating type polymer valve are thrombus formation and hemolysis. It is well known that the shear stress in the fluid and flow separation around the valve are blamed for such disastrous phenomena. In this viewpoint, through study of the flow field around the valve is imperative to improve design of the valve. The aim of this study is to investigate the fluid flow around a floating type polymer valve. The numerical method employed in this study is the finite element software called ADINA. Incompressible viscous flow is assumed for blood using the assumption of Newtonian fluid. In this study, two prominent features of the axisymmetric flow around the floating type polymer valve are observed: jet-like flows observed near the gap between the conduit and the valve, and recirculating flow downstream of the valve. We also provided a detailed description of shear stress field according to the variation of flow conditions. The shear stress in fluid has its maximum value near the gap between the valve and the conduit.