Tenth International Symposium on Turbulence and Shear Flow Phenomena
DOI: 10.1615/TSFP10
Relation between Velocity Profile and Friction Factor at High Reynolds Number in Fully Developed Pipe Flow
pages 647-652
DOI: 10.1615/TSFP10.1100
RÉSUMÉ
The new experimental data of the fully developed pipe flow using Hi-Reff at AIST, NMIJ is presented. The experiments was performed at higher Reynolds number region up to 107. The velocity profile data was fitted to a velocity profile formula based on the log law, and an equation for the friction factor was derived by integration, which agreed very well with the friction factor data obtained from pressure drop and flowrate. The deviation between the derived equation and the measured friction factor data is less than 1%, which indicates the high reliability of the measurement data at the Hi-Reff.