Hostname: page-component-7c8c6479df-r7xzm Total loading time: 0 Render date: 2024-03-27T10:11:21.237Z Has data issue: false hasContentIssue false

Experimental investigation of periodic flow in curved pipes

Published online by Cambridge University Press:  26 April 2006

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

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
Copyright
© 1993 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Austin, L. 1971 The development of viscous flow within helical coils. PhD thesis, University of Utah.
Berger, S. A., Talbot, L. &Yao, L. S. 1983 Flow in curved pipes. Ann. Rev. Fluid Mech. 15, 461.Google Scholar
Hamakiotes, C. C. &Berger, S. A. 1989 Period tripling in periodic flows through curved pipes. Phys. Rev. Lett 62, 1270.Google Scholar
Hamakiotes, C. C. &Berger, S. A. 1990 Periodic flows through curved tubes: the effect of the frequency parameter. J. Fluid Mech. 210, 353.Google Scholar
Ito, H. 1987 Flow in curved pipes. JSME Intl. J. 30, 543.Google Scholar
Matisse, P. &Gorman, M. 1984 Neutrally buoyant anisotropic particles for flow visualization. Phys. Fluids 27, 759.Google Scholar
Talbot, L. &Gong, K. O. 1983 Pulsatile entrance flow in a curved pipe. J. Fluid Mech. 127, 1.Google Scholar
Weast, R. C. 1968 Handbook of Chemistry and Physics, 52nd Edn. Chemical Rubber Company.
Yao, L. S. &Berger, S. A. 1975 Entry flow in a curved pipe. J. Fluid Mech. 67, 177.Google Scholar