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TECHNICAL PAPERS

Calculation of Unsteady Flows in Curved Pipes

[+] Author and Article Information
H. A. Dwyer

Department of Mechanical and Aerospace Engineering University of California, Davis, Davis, CA 95616e-mail: hadwyer@ucdavis.edu

A. Y. Cheer

T. Rutaganira

Department of Mathematics, University of California, Davis, Davis, CA 95616

N. Shacheraghi

Department of Mechanical and Aerospace Engineering   University of California, Davis, Davis, CA 95616

J. Fluids Eng 123(4), 869-877 (Jun 06, 2001) (9 pages) doi:10.1115/1.1400748 History: Received October 12, 2000; Revised June 06, 2001
Copyright © 2001 by ASME
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References

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Yam, Clement, and Dwyer, H. A., 1993, “Unsteady Flow in a Curved Pipe,” Fluid Dynamics in Biology, Contemporary Mathematics 141, American Mathematical Society.
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Ku,  D. N., Giddens,  D. P., Zarins, and  C. K., Glagov,  S., 1985, “Pulsatile flow and atherosclerosis in the human cartoid bifurcation,” Atherosclerosis (Dallas), 5, pp. 293–302.
Moore,  J. E., Xu,  C., Glagov,  S., Zarins,  C. K., and Ku,  D. N., 1994, “Fluid wall shear stress measurements in a model of the abdominal aorta: oscillatory behavior and relationship to atherosclerosis,” Atherosclerosis (Berlin), 110, pp. 225–282.
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Figures

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Mesh system used for the calculations in a curved pipe with circular cross-sections
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Steady flow calculations in a curved pipe, Re=750. Part (A)-Symmetry plane pressure contours and velocity vectors. Part (B)-Mid plane primary flow velocity contours and cross-flow velocity vectors. Part (C)-Primary flow velocity shape.
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Cycle average velocity profile and average velocity error
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Pressure contours and axial velocity contours during a complete cycle, Re=375,α=15
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Analysis of the pressure field during a cycle, Re=375,α=15
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Pressure contours and axial velocity contours during a complete cycle for an elliptical cross-section, Re=375,α=15
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Pressure contours and axial velocity contours during a complete cycle, Re=375,α=5
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Wall shear contours during a cycle, Re=375,α=15
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Wall shear contours at maximum flow for flow variation cases

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