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An experimental and numerical study of periodic flow in a curved tube

Published online by Cambridge University Press:  19 April 2006

J. Y. Lin  and
J. M. Tarbell
J. Y. Lin
Affiliation:
Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802
J. M. Tarbell
Affiliation:
Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802
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Abstract

Fully developed periodic flow (with non-zero mean) of a Newtonian fluid in a rigid curved tube has been investigated both numerically and experimentally. Results are reported for the mean friction factor, the amplitude ratio and phase angle between flow rate and pressure drop, the axial velocity profile, and the wall shear stress distribution. The numerical results (obtained by a finite difference method) are restricted to rather slow flows (mean Dean number $\tilde{Dn} < 100 $), while the experimental results (extracted from instantaneous flow rate-pressure drop measurements) extend up to $\tilde{Dn} \sim 300 $. A ‘resonant’ interaction between the axial and secondary flows at intermediate frequencies appears to be a characteristic feature of periodic flow in a curved tube.

Information

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 100 , Issue 3 , 16 October 1980 , pp. 623 - 638
Copyright
© 1980 Cambridge University Press

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