Existence of k⁻¹ power-law scaling in the equilibrium regions of wall-bounded turbulence explained by Heisenberg's eddy viscosity.

Published

Journal Article

The existence of a "-1" power-law scaling at low wavenumbers in the longitudinal velocity spectrum of wall-bounded turbulence was explained by multiple mechanisms; however, experimental support has not been uniform across laboratory studies. This letter shows that Heisenberg's eddy viscosity approach can provide a theoretical framework that bridges these multiple mechanisms and explains the elusiveness of the "-1" power law in some experiments. Novel theoretical outcomes are conjectured about the role of intermittency and very-large scale motions in modifying the k⁻¹ scaling.

Full Text

Duke Authors

Cited Authors

  • Katul, GG; Porporato, A; Nikora, V

Published Date

  • December 13, 2012

Published In

Volume / Issue

  • 86 / 6 Pt 2

Start / End Page

  • 066311 -

PubMed ID

  • 23368042

Pubmed Central ID

  • 23368042

Electronic International Standard Serial Number (EISSN)

  • 1550-2376

International Standard Serial Number (ISSN)

  • 1539-3755

Digital Object Identifier (DOI)

  • 10.1103/physreve.86.066311

Language

  • eng