Measurements of jets: Prediction of the valvular lesion size and regurgitation

L.P. Chua, S.C. Tung, Ching Man Yu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

The velocity profiles of a circular jet and a square jet with initially laminar boundary layer were measured from the jet exit to about 45 diameters d (or equivalent diameters De) downstream with a single hot wire probe to verify a new quantification method for valvular regurgitation and lesion size. The onset of self-similarity for centerline local mean velocity is found to be about 6d with initial laminar velocity condition. Velocity measurements of valvular regurgitation jets, for that matter, should be taken at a minimum distance of 6d. The velocity profiles of a circular jet and a square jet with initially laminar boundary layer were measured from the jet exit to about 45 diameters d (or equivalent diameters De) downstream with a single hot wire probe to verify a new quantification method for valvular regurgitation and lesion size. The onset of self-similarity for centerline local mean velocity is found to be about 6d with initial laminar velocity condition. Velocity measurements of valvular regurgitation jets, for that matter, should be taken at a minimum distance of 6d.
Original languageEnglish
Pages (from-to)939-948
Number of pages10
JournalInternational Communications in Heat and Mass Transfer
Volume25
Issue number7
DOIs
Publication statusPublished - 1 Oct 1998
Externally publishedYes

Keywords

  • Blood flow
  • Jet flow

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Chemical Engineering(all)
  • Condensed Matter Physics

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