JOURNAL BROWSE
Search
Advanced SearchSearch Tips
PIV Measurements of Flow Downstream of Polyurethane Heart Valve Prosthesis for Artificial Heart : Steady Flow Experiment
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
PIV Measurements of Flow Downstream of Polyurethane Heart Valve Prosthesis for Artificial Heart : Steady Flow Experiment
Kim, Jung Gyeong; Seong, Jae Yong; Jang, Jun Geun; Yu, Jeong Yeol; Min, Byeong Gu;
 
 Abstract
Hemodynamic performance of a polyurethane heart valve prosthesis was evaluated in comparison with that of Bjork-Shiley Monostrut mechanical valve in steady flow representing the systolic peak flow phase. Pressure losses through the valves were obtained from the streamwise pressure distributions downstream of the valves. Unsteady and turbulent flow field distal to the heart valve prostheses were investigated using M (Particle Image Velocimetry) which can measure the full-field velocity instantaneously and noninvasively. BY examining the velocity and Reynolds shear stress fields downstream of the polyurethane heart valve, it is known that there is a large recirculation region near the valve and high shear stress regions exist at the interface between strong axial jet flows along the wall and vortical flows in the central area. The possibilities of vascular complications, such as the thrombus formation and red blood cell damage, could be predicted from the overall view of the velocity and stress fields.
 Keywords
Polyurethane Heart Valve Prosthesis;PIV;Hemolysis;Thrombus;
 Language
Korean
 Cited by
 References
1.
Artif. Organs., 1997. vol.21. 8, pp.922-928

2.
ASAIO Trans., 1988. vol.34. 4, pp.1033-1039

3.
Int. J. Artif. Organs, 1996. vol.19. 12, pp.712-18

4.
KSME Int. J., 1993. vol.7. 3, pp.223-230

5.
대한공학회지, 1996. vol.17. 1, pp.49-59

6.
Scand. J. Thorac. Cardiovasc. Surg., 1979. vol.13. 3, pp.177-189

7.
Proceedings of the 10th International Conference on mechanics in Medicine and Biology, 1998. pp.141-144

8.
ASAIO Trans., 1990. vol.36. 3, pp.M274-M278

9.
J. Biomech., 1998. vol.31. 5, pp.411-421

10.
J. Biomech., 1998. vol.31. 5, pp.411-421

11.
J. Biomech. Eng., 1993. vol.115. 3, pp.290-298

12.
J. Biomech. Eng., 1988. vol.110. 4, pp.334-43

13.
J. Biomech., 1983. vol.16. 10, pp.865-873

14.
Int. J. Artif. Organs, 1989. vol.12. 4, pp.261-269

15.
J. Thorac. Cardiovasc. Surg., 1988. vol.95. 5, pp.929-939

16.
J. Biomech., 1992. vol.25. 3, pp.213-222

17.
J. Biomech. Eng., 1997. vol.119. 1, pp.45-51

18.
Biophys. J., 1972. vol.12. 3, pp.257-273

19.
Biophys. J., 1975. vol.15. 1, pp.1-10

20.
J. Biomed. Mater. Res., 1974. vol.8. 2, pp.119-136

21.
Circ. Res., 1977. vol.41. 1, pp.2-8

22.
ASAIO J., 1996. vol.42. 3, pp.154-163