Turbulence Intensity Scaling: A Fugue

We study streamwise turbulence intensity definitions using smooth- and rough-wall pipe flow measurements made in the Princeton Superpipe. Scaling of turbulence intensity with the bulk (and friction) Reynolds number is provided for the definitions. The turbulence intensity scales with the friction fa...

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Bibliographic Details
Published in:Fluids (Basel) 2019-10, Vol.4 (4), p.180
Main Author: Basse, Nils T.
Format: Article
Language:English
Subjects:
computational fluid dynamics boundary conditions
Flow measurement
Flow velocity
Fluid dynamics
Fluid flow
Fluid mechanics
Friction
Friction factor
Pipe flow
princeton superpipe measurements
Reynolds number
smooth- and rough-wall pipe flow
streamwise turbulence intensity definitions
Turbulence intensity
Turbulent flow
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Summary:We study streamwise turbulence intensity definitions using smooth- and rough-wall pipe flow measurements made in the Princeton Superpipe. Scaling of turbulence intensity with the bulk (and friction) Reynolds number is provided for the definitions. The turbulence intensity scales with the friction factor for both smooth- and rough-wall pipe flow. Turbulence intensity definitions providing the best description of the measurements are identified. A procedure to calculate the turbulence intensity based on the bulk Reynolds number (and the sand-grain roughness for rough-wall pipe flow) is outlined.
ISSN:2311-5521
2311-5521
DOI:10.3390/fluids4040180