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Experimental investigation of periodic flow in curved pipes

Published online by Cambridge University Press:  26 April 2006

Chris J. Swanson ,
Steven R. Stalp  and
Russell J. Donnelly
Chris J. Swanson
Affiliation:
Department of Physics, University of Oregon, Eugene, OR 97403, USA Present address: Department of Physics, Westmont College, Santa Barbara, CA 93108, USA.
Steven R. Stalp
Affiliation:
Department of Physics, University of Oregon, Eugene, OR 97403, USA
Russell J. Donnelly
Affiliation:
Department of Physics, University of Oregon, Eugene, OR 97403, USA
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Abstract

We have studied oscillatory flow through a 180° curved tube with the ratio of tube radius to radius of curvature equal to 1/7. The flow rate is constrained to vary sinusoidally about a non-zero mean at a specified period T, and mean flow rate Q. At a certain parameter range of interest Hamakiotes & Berger (1990) predict that fully developed flow undergoes a period-tripling bifurcation. Our measurements using laser-Doppler velocimetry found no bifurcation. An additional experiment was done to ensure that the flow was fully developed.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 256 , November 1993 , pp. 69 - 83
Copyright
© 1993 Cambridge University Press

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References

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