An analysis of turbulent shear stresses in leakage flow through a bileaflet mechanical prostheses

Brandon R. Travis, Hwa L. Leo, Parina A. Shah, David Frakes, Ajit P. Yoganathan

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

In this work, estimates of turbulence were made from pulsatile flow laser Doppler velocimetry measurements using traditional phase averaging and averaging after the removal of cyclic variation. These estimates were compared with estimates obtained from steady leakage flow LDV measurements and an analytical method. The results of these studies indicate that leakage jets which are free and planar in shape may be more unstable than other leakage jets, and that cyclic variation does not cause a gross overestimation of the Reynolds stresses at large distances from the leakage jet orifice.

Original languageEnglish (US)
Pages (from-to)155-165
Number of pages11
JournalJournal of Biomechanical Engineering
Volume124
Issue number2
DOIs
StatePublished - 2002
Externally publishedYes

Fingerprint

Pulsatile Flow
Laser-Doppler Flowmetry
Prosthetics
Prostheses and Implants
Shear stress
Pulsatile flow
Flow measurement
Orifices
Velocity measurement
Turbulence
Lasers

ASJC Scopus subject areas

  • Biomedical Engineering
  • Biophysics

Cite this

An analysis of turbulent shear stresses in leakage flow through a bileaflet mechanical prostheses. / Travis, Brandon R.; Leo, Hwa L.; Shah, Parina A.; Frakes, David; Yoganathan, Ajit P.

In: Journal of Biomechanical Engineering, Vol. 124, No. 2, 2002, p. 155-165.

Research output: Contribution to journalArticle

Travis, Brandon R. ; Leo, Hwa L. ; Shah, Parina A. ; Frakes, David ; Yoganathan, Ajit P. / An analysis of turbulent shear stresses in leakage flow through a bileaflet mechanical prostheses. In: Journal of Biomechanical Engineering. 2002 ; Vol. 124, No. 2. pp. 155-165.
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