Local gas transport rate in oscillatory flow in a model human central airways

Gaku Tanaka*, Jin Ito, Kotaro Oka, Kazuo Tanishita


研究成果: Chapter

4 被引用数 (Scopus)


The rate of local axial gas transport in oscillatory flow through a model human central airways was measured to evaluate the gas exchange during high-frequency oscillation. A rigid model of human airways consists of asymmetrical bifurcations up to third generation, of which geometries were determined by the study of Horsfield et. al. (1971). A bolus of CO 2 tracer was injected into the trachea, and effective diffusivities as a function of location in the airways were obtained by CO 2 washout profiles. The rate of increase of effective diffusivity depends on the local flow conditions and differs with branches. The effective diffusivity in the left main bronchus becomes 3 times greater than that in the straight tube, whereas no significant effect is observed in the right main bronchus.

ホスト出版物のタイトルAmerican Society of Mechanical Engineers, Bioengineering Division (Publication) BED
出版ステータスPublished - 1996

ASJC Scopus subject areas

  • 工学(全般)


「Local gas transport rate in oscillatory flow in a model human central airways」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。