Spatial and temporal variation of secondary flow during oscillatory flow in model human central airways

G. Tanaka, T. Ogata, K. Oka, K. Tanishita

研究成果: Article査読

30 被引用数 (Scopus)

抄録

Axial and secondary velocity profiles were measured in a model human central airway to clarify the oscillatory flow structure during high-frequency oscillation. We used a rigid model of human airways consisting of asymmetrical bifurcations up to third generation. Velocities in each branch of the bifurcations were measured by two-color laser-Doppler velocimeter. The secondary velocity magnitudes and the deflection of axial velocity were dependent not only on the branching angle and curvature ratio of each bifurcation, but also strongly depended on the shape of the path generated by the cascade of branches. Secondary flow velocities were higher in the left bronchus than in the right bronchus. This spatial variation of secondary flow was well correlated with differing gas transport rates between the left and right main bronchus.

本文言語English
ページ(範囲)565-573
ページ数9
ジャーナルJournal of Biomechanical Engineering
121
6
DOI
出版ステータスPublished - 1999 12

ASJC Scopus subject areas

  • 生体医工学
  • 生理学(医学)

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