Self-organization and transition to turbulence in isotropic fluid motion driven by negative damping at low wavenumbers

W. D. McComb, M. F. Linkmann, A. Berera, S. R. Yoffe, B. Jankauskas

Research output: Contribution to journalArticlepeer-review

Abstract

We observe a symmetry-breaking transition from a turbulent to a self-organized state in direct numerical simulation of the Navier-Stokes equation at very low Reynolds number. In this self-organized state the kinetic energy is contained only in modes at the lowest resolved wavenumber, the skewness vanishes, and visualization of the flows shows a lack of small-scale structure, with the vorticity and velocity vectors becoming aligned (a Beltrami flow).

Original languageEnglish
Article number25FT01
JournalJournal of Physics A: Mathematical and Theoretical
Volume48
Issue number25
DOIs
Publication statusPublished - 26 Jun 2015

Keywords

  • isotropic turbulence
  • self-organization
  • transition to turbulence

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