Abstract
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.
| Original language | English |
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| Title of host publication | American Society of Mechanical Engineers, Bioengineering Division (Publication) BED |
| Place of Publication | New York, NY, United States |
| Publisher | Publ by ASME |
| Pages | 211-214 |
| Number of pages | 4 |
| Volume | 22 |
| ISBN (Print) | 0791811166 |
| Publication status | Published - 1992 |
| Externally published | Yes |
| Event | Winter Annual Meeting of the American Society of Mechanical Engineers - Anaheim, CA, USA Duration: 1992 Nov 8 → 1992 Nov 13 |
Other
| Other | Winter Annual Meeting of the American Society of Mechanical Engineers |
|---|---|
| City | Anaheim, CA, USA |
| Period | 92/11/8 → 92/11/13 |
ASJC Scopus subject areas
- Engineering(all)