Browse > Article

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

Bang Jin-Seok (경희대학교 대학원 기계공학과)
Choi Choeng-Ryul (안양대학교 환경공학과)
Kim Chang-Nyung (경희대학교 테크노공학대학)
Publication Information
Journal of the Korean Society for Precision Engineering / v.22, no.3, 2005 , pp. 154-161 More about this Journal
Abstract
In this study, the leaflet motion of a mechanical heart valve and the characteristics of two-dimensional transient blood flow in an elastic blood vessel have been numerically investigated by using fluid-structure interaction method. Here, blood has been assumed as a Newtonian, incompressible fluid. Pressure profiles have been used as boundary conditions at the ventricle and the aorta. As a result, closing motion of the leaflet is faster than opening one. While opening angles of leaflet grow up, vortex is detected at the sinus and backward of the leaflets. When the leaflet is fully closed, vortex is detected at the ventricle and at that moment maximum displacement of the elastic blood vessel is observed in the vicinity of the sinus region. Maximum displacement is caused in association with the blood flow that is oriented toward the elastic blood vessel.
Keywords
Mechanical heart valve; Leaflet; Ventricle; Aorta;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Thubrikar, M. J., Sehm, G., Robicsek, P. and Fowler, B., 'Effect of the sinus geometry on the dynamics of bioprosthetic heart valves(abstract),' Proceedings of the 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Amsterdam. The Netherlands, pp. 10, November, 1996   DOI
2 Yoganathan, A. P., Corcoran, W. H., Harrison, E. C. and Cari, J. R., 'The Bjork-Shiley aortic prosthesis, Flow characteristics,' thrombus formation and tissue overgrowth,' Circulation, Vol. 58, pp. 70-76, 1978   DOI   ScienceOn
3 Yoganathan, A. P., Sung, H. S., Woo, T. R. and Jones, M., 'In vitro velocity and turbulent measurements in the vicinity of three new mechanical aortic heart valve prosthesis,' J. of Thorac Cardiovasc Surg, Vol. 95, pp. 929-939, 1988
4 Yang, H. Q. and Makhijani, V. B., 'A strongly coupled pressure-based CFD algorithm for fluid-structure interaction,' Proceeding of 32nd Aerospace Science meeting and Exhibit, Reno, NY, AIAA-94-0719, 1944
5 Thubrikar, M. J., Sehm, G., Robicsek, P. and Fowler, B., 'Effect of the sinus geometry on the dynamics of bioprosthetic heart valves(abstract),' Ann. Biomedical Eng., Vol. 24, No. S3, 1996
6 Frank, C. S., Aubrey, C. G. and Stephen, B. C., 'Acquired Disease of the Mitral Valve,' Proceedings of World Congress on heart Valve Replacement, pp. 15-18, 1989
7 Starr, A. and Edwards, M. L., 'Mitral replacement clinical experience with a ball-valve prosthesis,' Ann. Surg., Vol. 154, pp.726-740, 1961   DOI