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

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

Research output: Contribution to journalArticle

26 Scopus citations

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 - Apr 29 2002
Externally publishedYes

ASJC Scopus subject areas

  • Biomedical Engineering
  • Physiology (medical)

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