In vitro pulsatile flow visualization studies in a pulmonary artery model

E. Philpot, A. P. Yoganathan, H. W. Sung, Y. R. Woo, R. H. Franch, David Sahn, L. Valdez-Cruz

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

In-vitro pulsatile flow visualization studies were conducted in an adult-sized pulmonary artery model to observe the effects of valvular pulmonic stenosis on the flow fields of the main, left and right pulmonary arteries. The flow patterns revealed that as the degree of stenosis increased, the jet-type flow created by the valve became narrower, and it impinged on the far (distal) wall of the left pulmonary artery further downstream from the junction of the bifurcation. This in turn led to larger regions of disturbed turbulent flow, as well as helical-type secondary flow motions in the left pulmonary artery, compared to the right pulmonary artery. The flow field in the main pulmonary artery also became more disturbed and turbulent, especially during peak systole and the deceleration phase. The flow visualization observations have been valuable in helping to conduct further quantitative studies such as pressure and velocity field mapping. Such studies are important to understanding the fluid mechanics characteristics of the main pulmonary artery and its two major branches.

Original languageEnglish (US)
Pages (from-to)368-375
Number of pages8
JournalJournal of Biomechanical Engineering
Volume107
Issue number4
StatePublished - Nov 1985
Externally publishedYes

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Pulsatile Flow
Pulsatile flow
Flow visualization
Pulmonary Artery
Flow fields
Secondary flow
Fluid mechanics
Deceleration
Flow patterns
Turbulent flow
Pulmonary Valve Stenosis
Systole
In Vitro Techniques
Mechanics
Pathologic Constriction
Pressure

ASJC Scopus subject areas

  • Biomedical Engineering
  • Biophysics

Cite this

Philpot, E., Yoganathan, A. P., Sung, H. W., Woo, Y. R., Franch, R. H., Sahn, D., & Valdez-Cruz, L. (1985). In vitro pulsatile flow visualization studies in a pulmonary artery model. Journal of Biomechanical Engineering, 107(4), 368-375.

In vitro pulsatile flow visualization studies in a pulmonary artery model. / Philpot, E.; Yoganathan, A. P.; Sung, H. W.; Woo, Y. R.; Franch, R. H.; Sahn, David; Valdez-Cruz, L.

In: Journal of Biomechanical Engineering, Vol. 107, No. 4, 11.1985, p. 368-375.

Research output: Contribution to journalArticle

Philpot, E, Yoganathan, AP, Sung, HW, Woo, YR, Franch, RH, Sahn, D & Valdez-Cruz, L 1985, 'In vitro pulsatile flow visualization studies in a pulmonary artery model', Journal of Biomechanical Engineering, vol. 107, no. 4, pp. 368-375.
Philpot E, Yoganathan AP, Sung HW, Woo YR, Franch RH, Sahn D et al. In vitro pulsatile flow visualization studies in a pulmonary artery model. Journal of Biomechanical Engineering. 1985 Nov;107(4):368-375.
Philpot, E. ; Yoganathan, A. P. ; Sung, H. W. ; Woo, Y. R. ; Franch, R. H. ; Sahn, David ; Valdez-Cruz, L. / In vitro pulsatile flow visualization studies in a pulmonary artery model. In: Journal of Biomechanical Engineering. 1985 ; Vol. 107, No. 4. pp. 368-375.
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