Turbulent boundary layer response to the introduction of stable stratification

Tyler Van Buren, Owen Williams, Alexander J. Smits

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The response of an initially neutral rough-wall turbulent boundary layer to a change in wall temperature is investigated experimentally. The change causes a localized peak in stable stratification that diffuses and moves away from the wall with downstream distance. The streamwise and wall-normal components of turbulent velocity fluctuations are damped at similar rates, even though the stratification only directly impacts the wall-normal component. The Reynolds shear profiles reveal the growth of an internal layer that scales approximately with the bulk Brunt-Väisälä frequency.

Original languageEnglish (US)
Pages (from-to)569-581
Number of pages13
JournalJournal of Fluid Mechanics
Volume811
DOIs
StatePublished - Jan 25 2017

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Keywords

  • geophysical and geological flows
  • stratified turbulence
  • turbulent boundary layers

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