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TECHNICAL PAPERS

Stability of Elliptical Cylinders in Two-Dimensional Channel Flow

[+] Author and Article Information
Yu Zhao, M. Keith Sharp

Department of Bioengineering, University of Utah, Salt Lake City, UT 84112

J Biomech Eng 122(5), 493-497 (May 30, 2000) (5 pages) doi:10.1115/1.1289990 History: Received March 23, 1999; Revised May 30, 2000
Copyright © 2000 by ASME
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References

Figures

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Flow schematic with coordinate system origin on the cylinder
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Torque versus orientation at y0/H=0.1 for Re=20. Torque equilibrium occurred for a/b=4 near 6 deg orientation and for a/b=5 near 8 deg orientation. For a/b=2 and a/b=3, no torque balance was found.
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Torque versus orientation at y0/H=0.2 for Re=20. No torque equilibrium was found for this transverse location.
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Torque versus orientation at y0/H=0.3 for Re=20. No torque equilibrium was found for this transverse location.
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Torque versus orientation at y0/H=0.4 for Re=20. No torque equilibrium was found for this transverse location.
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Lift versus transverse location with cylinder orientation 0 deg
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Lift versus transverse location with cylinder orientation 6 deg
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Lift versus transverse location with cylinder orientation 8 deg
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Lift versus transverse location with cylinder orientation 10 deg
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Lift and torque versus orientation for a cylinder with aspect ratio a/b=2 at transverse location y0/H=0.2. Lift and torque are positive for all orientations from 0 to 90 deg.
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Fluid inertia effect on torque for a cylinder of aspect ratio a/b=4 at transverse location y0/H=0.113. Note Re=10 is required for torque balance.
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Normal and tangential torque components on a cylinder of aspect ratio a/b=4 at transverse location y0/H=0.113. Tangential torque is independent of Re and normal torque increases with Re. Absolute value of (negative) normal torque shown.

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