LASER-DOPPLER AND HOT-FILM STUDY OF TURBULENCE IN PROSTHETIC HEART VALVE FLOW.

J. Seki, K. Hayashi, T. Nakamura, Mitsuo Umezu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Turbulence in blood flow is believed to cause hemolysis, thrombus formation, damage to endothelial cells, atherosclerosis, and so on. Stein and Sabbah observed turbulence in the human aorta under the physiologically normal condition, particularly in a patient implanted with a prosthetic heart valve in the aortic position. Although the turbulence intensity and turbulence energy spectrum in the flow around prosthetic valves have been determined by means of the laser-Doppler anemometer, the turbulence produced under pulsatile flow condition has not been studied in detail. The present paper deals with the cross-sectional and axial distributions of turbulence intensity, change in the turbulence energy spectrum and the spatial correlation of turbulence velocities observed behind a prosthetic heart valve during cardiac cycle.

Original languageEnglish
Title of host publicationUnknown Host Publication Title
Place of PublicationNew York, NY, USA
PublisherASME
Pages35-38
Number of pages4
Publication statusPublished - 1985
Externally publishedYes

Fingerprint

Heart valve prostheses
Turbulence
Lasers
Pulsatile flow
Anemometers
Endothelial cells
Prosthetics
Blood

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Seki, J., Hayashi, K., Nakamura, T., & Umezu, M. (1985). LASER-DOPPLER AND HOT-FILM STUDY OF TURBULENCE IN PROSTHETIC HEART VALVE FLOW. In Unknown Host Publication Title (pp. 35-38). New York, NY, USA: ASME.

LASER-DOPPLER AND HOT-FILM STUDY OF TURBULENCE IN PROSTHETIC HEART VALVE FLOW. / Seki, J.; Hayashi, K.; Nakamura, T.; Umezu, Mitsuo.

Unknown Host Publication Title. New York, NY, USA : ASME, 1985. p. 35-38.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Seki, J, Hayashi, K, Nakamura, T & Umezu, M 1985, LASER-DOPPLER AND HOT-FILM STUDY OF TURBULENCE IN PROSTHETIC HEART VALVE FLOW. in Unknown Host Publication Title. ASME, New York, NY, USA, pp. 35-38.
Seki J, Hayashi K, Nakamura T, Umezu M. LASER-DOPPLER AND HOT-FILM STUDY OF TURBULENCE IN PROSTHETIC HEART VALVE FLOW. In Unknown Host Publication Title. New York, NY, USA: ASME. 1985. p. 35-38
Seki, J. ; Hayashi, K. ; Nakamura, T. ; Umezu, Mitsuo. / LASER-DOPPLER AND HOT-FILM STUDY OF TURBULENCE IN PROSTHETIC HEART VALVE FLOW. Unknown Host Publication Title. New York, NY, USA : ASME, 1985. pp. 35-38
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