Research Article
Aug 1980
Turbulence in Helically Corrugated Pipe Flow
Publication: Journal of the Engineering Mechanics Division
Volume 106, Issue 4
Abstract
Results are reported of experimental measurements of friction factor, mean and turbulent velocities, and Reynolds stresses in fully developed flow through a helically corrugated pipe. Helical corrugations induce a strong rotational component in the mean flow near the wall but this decreases rapidly toward the pipe axis. Turbulence intensities and axial shear are generally smaller in this flow than in nonrotating pipe flow and the reduction is attributed to rotation. Reynolds stress measurements extrapolated to the wall are in agreement with pressure drop measurements. Both show that pipe friction factor is less in helically corrugated pipe than in normally corrugated pipe, other factors being the same. The axial component of the mean flow is well fitted by the two-dimensional semilogarithmic law-of-the-wall for rough pipes. It is also fitted by the defect law but the numerical parameters of the latter behave as in an adverse pressure gradient boundary layer, indicating less shear stress than in nonrotating pipe flows. This is consistent with reduced friction factor.
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Published In
Journal of the Engineering Mechanics Division
Volume 106 • Issue 4 • August 1980
Pages: 699 - 717
Copyright
© 1980 American Society of Civil Engineers.
History
Published in print: Aug 1980
Published online: Feb 3, 2021
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Authors
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Edward Silberman, F.ASCE
Prof., St. Anthony Falls Hydr. Lab., Univ. of Minnesota, Minneapolis, Minn.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.