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Fluids 2017, 2(2), 30; doi:10.3390/fluids2020030

Turbulence Intensity and the Friction Factor for Smooth- and Rough-Wall Pipe Flow

Toftehøj 23, Høruphav, 6470 Sydals, Denmark
Academic Editor: William Layton
Received: 24 April 2017 / Revised: 16 May 2017 / Accepted: 8 June 2017 / Published: 10 June 2017
(This article belongs to the Special Issue Turbulence: Numerical Analysis, Modelling and Simulation)
View Full-Text   |   Download PDF [2395 KB, uploaded 12 June 2017]   |  

Abstract

Turbulence intensity profiles are compared for smooth- and rough-wall pipe flow measurements made in the Princeton Superpipe. The profile development in the transition from hydraulically smooth to fully rough flow displays a propagating sequence from the pipe wall towards the pipe axis. The scaling of turbulence intensity with Reynolds number shows that the smooth- and rough-wall level deviates with increasing Reynolds number. We quantify the correspondence between turbulence intensity and the friction factor. View Full-Text
Keywords: turbulence intensity; Princeton Superpipe measurements; flow in smooth- and rough-wall pipes; friction factor turbulence intensity; Princeton Superpipe measurements; flow in smooth- and rough-wall pipes; friction factor
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Basse, N.T. Turbulence Intensity and the Friction Factor for Smooth- and Rough-Wall Pipe Flow. Fluids 2017, 2, 30.

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