Scaling of the mean velocity profile for turbulent pipe flow

M. V. Zagarola, A. J. Smits

Research output: Contribution to journalArticlepeer-review

118 Scopus citations


An experimental investigation was conducted to determine the scaling of the mean velocity profile for a fully developed, smooth pipe flow. Measurements of the mean velocity profiles and static pressure gradients were performed at 26 different Reynolds numbers between 31 × 103 and 35 × 106. The profiles indicate two overlap regions: one which scales as a power law and one which scales as a log law, where the log law is only evident when the Reynolds number exceeds approximately 300 × 103. It is proposed that the velocity scales for the inner and outer regions are different, which is contrary to commonly accepted beliefs.

Original languageEnglish (US)
Pages (from-to)239-242
Number of pages4
JournalPhysical review letters
Issue number2
StatePublished - Jan 13 1997

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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