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TECHNICAL PAPERS

Oscillatory Flow and Gas Transport Through a Symmetrical Bifurcation

[+] Author and Article Information
Hideki Fujioka, Kotaro Oka, Kazuo Tanishita

Department of System Design Engineering, KEIO University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223, Japan

J Biomech Eng 123(2), 145-153 (Nov 01, 2000) (9 pages) doi:10.1115/1.1352735 History: Received April 01, 1998; Revised November 01, 2000
Copyright © 2001 by ASME
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References

Figures

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Distribution of effective diffusivity in the bifurcation. DeffSt represents the theoretical value for a straight tube.
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Gas transport rate in the bifurcating, curved, and straight tubes. The value of D for the bifurcating tube is the averaged value for D from stations P0 to D7 .
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Index of cross-sectional mixing by secondary flow
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Contour of the bifurcating tube model and the computational grid at various axial planes
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Stations where the axial velocities are presented
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Axial velocity profiles wa in the bifurcating plane. Dn2d4=10,αp=9.1,Rep=351.
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Axial velocity profiles wa in the bifurcating plane. Dn2d4=80,αp=9.1,Rep=994.
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Velocity profiles at ωt=3π/4 and at station P4 . Upper half of the cross-section shows axial velocity contours and the lower half shows secondary velocity vectors.
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Simulated and measured axial velocity profiles at station D4 . αp=4,Rep=550, the lines represent computational results from this study and the data points represent experimental results by Ueda 24
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Axial and cross-sectional concentration contours at the bifurcating plane. Dn2d4=10,αp=9.1,Rep=351, the numbered lines are the value of the parameter Repp2.
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Axial and cross-sectional concentration contours at the bifurcating plane. Dn2d4=20,αp=9.1,Rep=497, the numbered lines are the value of the parameter Repp2.

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