Effect of turbulence on the Taylor dispersion in oscillatory flow

Masahiro Nishida*, Hideki Fujioka, Takehiko Kowatari, Kazuo Tanishita

*この研究の対応する著者

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

The effective use of high frequency oscillation (HFO) requires the precise knowledge of Taylor dispersion of gas on the oscillatory flow. In the present study, axial gas transport and turbulent characteristics was measured on the oscillatory flow at and near resonance frequency, in straight circular pipe being simulated for the trachea. The velocity profiles were measured by hot wire anemometer. Effective dispersion coefficient was determined by the measurement of carbon dioxide concentration which was dispersed from the injection point. The turbulence appeared at the frequency near the resonance and turbulent intensity and kurtosis achieved the maximum values in the beginning of deceleration phase. Furthermore, the integral scale was enlarged and lateral mixing of carbon dioxide was enhanced by the large turbulent diffusion coefficient.

本文言語English
ホスト出版物のタイトルAmerican Society of Mechanical Engineers, Bioengineering Division (Publication) BED
Place of PublicationNew York, NY, United States
出版社Publ by ASME
ページ211-214
ページ数4
22
ISBN(印刷版)0791811166
出版ステータスPublished - 1992
外部発表はい
イベントWinter Annual Meeting of the American Society of Mechanical Engineers - Anaheim, CA, USA
継続期間: 1992 11月 81992 11月 13

Other

OtherWinter Annual Meeting of the American Society of Mechanical Engineers
CityAnaheim, CA, USA
Period92/11/892/11/13

ASJC Scopus subject areas

  • 工学(全般)

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