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Relation between Velocity Profile and Friction Factor at High Reynolds Number in Fully Developed Pipe Flow

Noriyuki Furuichi
Department of Mechanical System Engineering, Gifu University Yanagido 1-1, Gifu 501-1193, Japan; Paul Scherrer Insitut CH5232 Villigen PSI, Switzerland; National Metrology Institute of Japan National Institute of Advanced Industrial Science and Technology. 1-1-1 Umezono, Tsukuba, 305-8563, Japan

Yoshiya Terao
National Metrology Institute of Japan National Institute of Advanced Industrial Science and Technology. 1-1-1 Umezono, Tsukuba, 305-8563, Japan

Yuki Wada
Department of Engineering Nagoya University Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan

Yoshiyuki Tsuji
KTH Mechanics, Royal Institute of Technology, 100 44 Stockholm, Sweden; Department of Energy Science and Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8503, Japan

Sinopsis

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.