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TECHNICAL PAPERS

Mechanics of the Flow in the Small and Middle Human Airways

[+] Author and Article Information
Ashraf Farag

Delphi Thermal Systems, A&E Building 6, 200 Upper Mountain Road, Lockport, NY 14094e-mail: faragaa@hotmail.com

Jeffery Hammersley, Dan Olson

Center of Environmental Medicine, Medical College of Ohio, 3000 Arlington Ave., Toledo, OH 43699

Terry Ng

MIME Department, University of Toledo, Toledo, OH 43606e-mail: tng@top.eng.utoledo.edu

J. Fluids Eng 122(3), 576-584 (May 03, 2000) (9 pages) doi:10.1115/1.1287724 History: Received August 10, 1999; Revised May 03, 2000
Copyright © 2000 by ASME
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References

Figures

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(a) Symmetrical model configuration; (b) (i) measurement stations and (ii) velocity components
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Downstream development of the primary velocity in the plane of bifurcation at Re=1500; CS is the carinal side and IC is the inner of curvature
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Secondary flow at the inlet to the model (l/d=−3.4) and first measuring location (l/d=−1.61); CS is the carinal side and IC is the inner of curvature
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Secondary velocity components in the normal plane and plane of bifurcation at different axial locations from the flow divider (l/d=0.0) at Re=1500
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Downstream development of primary velocity in the normal plane at different axial locations (l/d) at Re=1500; CS is the carinal side and IC is the inner of curvature
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Secondary velocity components in the transition zone at two different axial locations, Re=1500; CS is the carinal side and IC is the inner of curvature
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Dimensionless wall axial velocity gradients at different downstream locations (l/d) at Re=1500
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The downstream evolution of the transverse shifts in the axial velocity, expressed as the first moment (X/a), Re=1500
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Development of the mean axial vorticity compared to the curved tube: (a) in central core; (b) on maximal circulation path; (c) in the boundary layer

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