Journal of Mechanical Science and Technology

, Volume 19, Issue 9, pp 1761–1772 | Cite as

A numerical analysis on the curved bileaflet mechanical heart valve (mhv): leaflet motion and blood flow in an elastic blood vessel

  • Jin Seok Bang
  • Choeng Ryul Choi
  • Chang Nyung Kim


In blood flow passing through the mechanical heart valve (MHV) and elastic blood vessel, hemolysis and platelet activation causing thrombus formation can be seen owing to the shear stress in the blood. Also, fracture and deformation of leaflets can be observed depending on the shape and material properties of the leaflets which is opened and closed in a cycle. Hence, comprehensive study is needed on the hemodynamics which is associated with the motion of leaflet and elastic blood vessel in terms of fluid-structure interaction. In this paper, 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 light of fluid-structure interaction. From this analysis fluttering phenomenon and rebound of the leaflet have been observed and recirculation and regurgitation have been found in the flow fields of the blood. Also, the pressure distribution and the radial displacement of the elastic blood vessel have been obtained. The motion of the leaflet and flow fields of the blood have shown similar tendency compared with the previous experiments carried out in other studies. The present study can contribute to the design methodology for the curved bileaflet mechanical heart valve. Furthermore, the proposed fluid-structure interaction method will be effectively used in various fields where the interaction between fluid flow and structure are involved.

Key Words

Mechanical Heart Valve (MHV) Artery Thrombus Formation Hemodynamics Fluid-Structure Interaction (FSI) 



Coordinate transformation Jacobian


Displacement vector


Mass matrix


Damping matrix


Stiffness matrix


Force vector


Influence coefficient


Pressure at fluid-structure boundaries

Greek Letters




Dynamic viscosity


Leaflet opening angle


Rotation angle


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Copyright information

© The Korean Society of Mechanical Engineers (KSME) 2005

Authors and Affiliations

  • Jin Seok Bang
    • 1
  • Choeng Ryul Choi
    • 2
  • Chang Nyung Kim
    • 3
  1. 1.Mechanical Engineering DepartmentGraduate School of Kyunghee UniversityKihung, YonginKorea
  2. 2.College of Environmental EngineeringAn Yang UniversityManan-gu, Anyang-shiKorea
  3. 3.College of Advanced TechnologyKyunghee UniversityKihung, YonginKorea

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