Turbulent boundary layer statistics at very high Reynolds number

M. Vallikivi, Marcus Nils Hultmark, Alexander Smits

Research output: Contribution to journalArticle

50 Scopus citations

Abstract

Measurements are presented in zero-pressure-gradient, flat-plate, turbulent boundary layers for Reynolds numbers ranging from Reτ = 2600 to Reτ. The wind tunnel facility uses pressurized air as the working fluid, and in combination with MEMS-based sensors to resolve the small scales of motion allows for a unique investigation of boundary layer flow at very high Reynolds numbers. The data include mean velocities, streamwise turbulence variances, and moments up to 10th order. The results are compared to previously reported high Reynolds number pipe flow data. For Reτ ≥ 20 000, both flows display a logarithmic region in the profiles of the mean velocity and all even moments, suggesting the emergence of a universal behaviour in the statistics at these high Reynolds numbers.

Original languageEnglish (US)
Pages (from-to)371-389
Number of pages19
JournalJournal of Fluid Mechanics
Volume779
DOIs
StatePublished - Aug 17 2015

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Keywords

  • turbulent boundary layers
  • turbulent flows

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