Inverse cascade and energy transfer in forced low-Reynolds number two-dimensional turbulence

Joceline C Lega, T. Passot

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Using numerical simulations of the forced two-dimensional Navier-Stokes equation, it is shown that the amount of energy transferred to large scales is related to the Reynolds number in a unique fashion. It is also observed that the critical value of the initial Reynolds number for the onset of an inverse cascade is lowered as the scale of the forcing approaches the size of the system, or in the presence of anisotropy. This study is motivated by recent experiments with bacterial colonies, and their description in terms of a hydrodynamic model.

Original languageEnglish (US)
Pages (from-to)289-297
Number of pages9
JournalFluid Dynamics Research
Volume34
Issue number5
DOIs
StatePublished - May 2004

Fingerprint

Cascades (fluid mechanics)
low Reynolds number
Energy transfer
Reynolds number
cascades
Turbulence
turbulence
energy transfer
Navier-Stokes equation
Navier Stokes equations
Anisotropy
Hydrodynamics
hydrodynamics
anisotropy
Computer simulation
simulation
Experiments
energy

Keywords

  • Biological flows
  • Inverse cascade
  • Two-dimensional turbulence

ASJC Scopus subject areas

  • Mechanical Engineering
  • Statistical and Nonlinear Physics

Cite this

Inverse cascade and energy transfer in forced low-Reynolds number two-dimensional turbulence. / Lega, Joceline C; Passot, T.

In: Fluid Dynamics Research, Vol. 34, No. 5, 05.2004, p. 289-297.

Research output: Contribution to journalArticle

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