Large-scale sweeping of small-scale eddies in turbulence: A filtering approach

Theodore D. Drivas, Perry L. Johnson, Cristian C. Lalescu, Michael Wilczek

Research output: Contribution to journalArticlepeer-review

Abstract

We present an analysis of the Navier-Stokes equations based on a spatial filtering technique to elucidate the multiscale nature of fully developed turbulence. In particular, the advection of a band-pass-filtered small-scale contribution by larger scales is considered, and rigorous upper bounds are established for the various dynamically active scales. The analytical predictions are confirmed with direct numerical simulation data. The results are discussed with respect to the establishment of effective large-scale equations valid for turbulent flows.

Original languageEnglish (US)
Article number104603
JournalPhysical Review Fluids
Volume2
Issue number10
DOIs
StatePublished - Oct 2017
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Modeling and Simulation
  • Fluid Flow and Transfer Processes

Fingerprint Dive into the research topics of 'Large-scale sweeping of small-scale eddies in turbulence: A filtering approach'. Together they form a unique fingerprint.

Cite this