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TECHNICAL PAPERS

Flow Structure and Particle Transport in a Triple Bifurcation Airway Model

[+] Author and Article Information
Z. Zhang

Center for Environmental Medicine and Lung Biology, The University of North Carolina, Chapel Hill, NC 27599

C. Kleinstreuer

Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695-7910

C. S. Kim

Human Studies Division, National Health and Environmental Effects Research Laboratory, U.S. EPA, Research Triangle Park, NC 27711

J. Fluids Eng 123(2), 320-330 (Dec 27, 2000) (11 pages) doi:10.1115/1.1359525 History: Received January 09, 2000; Revised December 27, 2000
Copyright © 2001 by ASME
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References

Figures

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Schematic of symmetric in-plane triple bifurcation geometry: (a) block structure and (b) finite volume mesh
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Comparison between computed data set and measured η(St) correlation for: (a) first bifurcation and (b) second bifurcation of a symmetric planar bifurcation
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Coordinate systems and locations of various cross sections used for visualization of air flow and particle transport in a triple bifurcation model
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Mid-plane axial flow patterns of the triple bifurcation model: (a) Re=500 and (b) Re=2000
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Axial velocity contours and secondary velocity plots at different cross sections in the triple bifurcation model for Re=500
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Axial velocity contours and secondary velocity plots at different cross sections in the triple bifurcation model for Re=2000
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Particle distributions and flow directions in the triple bifurcation at different cross sections: (a) Re=500,St=0.04 and (b) Re=2000,St=0.04. (Note: • indicates impacting particles and the arrow only indicates the direction of particle motion.)
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Particle distributions and flow directions in the triple bifurcation at different cross sections: (a) Re=500,St=0.12 and (b) Re=2000,St=0.12. (Note: • indicates impacting particles and the arrow only indicates the direction of particle motion.)
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Time evolution for a volumetric particle pulse in the triple bifurcation for St=0.12 and Re=2000

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