
arXiv: 1801.06203
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.
QC120-168.85, Princeton Superpipe measurements, Fluid Dynamics (physics.flu-dyn), FOS: Physical sciences, computational fluid dynamics boundary conditions, princeton superpipe measurements, Physics - Fluid Dynamics, smooth- and rough-wall pipe flow, Descriptive and experimental mechanics, friction factor, Thermodynamics, QC310.15-319, streamwise turbulence intensity definitions
QC120-168.85, Princeton Superpipe measurements, Fluid Dynamics (physics.flu-dyn), FOS: Physical sciences, computational fluid dynamics boundary conditions, princeton superpipe measurements, Physics - Fluid Dynamics, smooth- and rough-wall pipe flow, Descriptive and experimental mechanics, friction factor, Thermodynamics, QC310.15-319, streamwise turbulence intensity definitions
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