A Numerical Analysis on the Motion of a Curved Bileaflet in Mechanical Heart Valve(MHV) and the Characteristics of Blood Flow in an Elastic Blood Vessel

탄성혈관 내 곡면형 이엽 기계식 인공심장판막의 거동 및 혈액 유동 특성에 관한 수치해석적 연구

In this study, a numerical analysis has been performed for a three-dimensional pulsatile blood flow associated with the elastic blood vessel and curved bileaflet for multiple cycles in terms of fluid-structure interaction. Here, blood has been assumed as a Newtonian, incompressible fluid. Pressure profiles have been used as boundary conditions at the ventricle and the aorta. From this analysis, the motion of the leaflet has been observed with fluttering phenomenon and rebound, and the flow fields of blood have been obtained with recirculation and regurgitation. The results can contribute to the development of design methodology for the curved bileaflet mechanical heart valve.