Analysis of pulsatile flow field near prosthetic heart valves using laser-Doppler anemometer

Three types of Björk-Shiley tilting disk valves (flat disk, convexo-concave disk, monostrut convexo-concave disk) were tested in vitro under pulsatile flow condition. Velocity profiles of axial flow on the cross-section distal to these valves were determined using laser-Doppler anemometer. Flow thro...

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Bibliographic Details
Published inJinko Zoki Vol. 14; no. 3; pp. 1305 - 1308
Main Authors SEKI, J., NAKANURA, T., UMEZU, M., HAYASHI, K.
Format Journal Article
LanguageJapanese
Published JAPANESE SOCIETY FOR ARTIFICIAL ORGANS 1985
Subjects
Cross-sectional flow profile; Turbulence intensity
Laser-Doppler anemometer
Prosthetic heart valve
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Summary:Three types of Björk-Shiley tilting disk valves (flat disk, convexo-concave disk, monostrut convexo-concave disk) were tested in vitro under pulsatile flow condition. Velocity profiles of axial flow on the cross-section distal to these valves were determined using laser-Doppler anemometer. Flow through the minor orifice was lowest and flow profile was least uniform in the flat disk valve among three valves. The highest turbulence intensity was observed behind the cc disk valve. Average velocity profiles were similar in the cc and monostrut cc disk valves regardless of their different disk opening angles.
ISSN:0300-0818
1883-6097
DOI:10.11392/jsao1972.14.1305