Large-scale dissipation and filament instability in two-dimensional turbulence (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Large-scale dissipation and filament instability in two-dimensional turbulence (Articolo in rivista) (literal)

Anno

• 2005-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1103/PhysRevLett.95.014503 (literal)

Alternative label

• D. Elhmaidi, J. von Hardenberg, A. Provenzale (2005)
  Large-scale dissipation and filament instability in two-dimensional turbulence
  in Physical review letters (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• D. Elhmaidi, J. von Hardenberg, A. Provenzale (literal)

Pagina inizio

• 14503 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 95 (literal)

Rivista

• Physical review letters (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 1 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Fac Sci Tunis, Lab Mecan Fluides, Tunis 1060, Tunisia (Elhmaidi) ISAC-CNR, Torino, Italy (Provenzale, von Hardenberg) (literal)

Titolo

• Large-scale dissipation and filament instability in two-dimensional turbulence (literal)

Abstract

• Coherent vortices in two-dimensional turbulence induce far-field effects that stabilize vorticity filaments and inhibit the generation of new vortices. We show that the large-scale energy sink often included in numerical simulations of statistically stationary two-dimensional turbulence reduces the stabilizing role of the vortices, leading to filament instability and to continuous formation of new coherent vortices. This counter-intuitive effect sheds new light on the mechanisms responsible for vortex formation in forced-dissipated two-dimensional turbulence and it has significant impact on the temporal evolution of the vortex population in freely-decaying turbulence. The time dependence of vortex statistics in the presence of a large-scale energy sink can be approximately described by a modified version of the scaling theory developed for small-scale dissipation. (literal)

Prodotto di

• Institute of atmospheric sciences and climate (ISAC) (Istituto)

Autore CNR

• ANTONELLO PROVENZALE (Persona)
• JOST DIEDRICH GRAF VON HARDENBERG (Unità di personale interno)

Incoming links:

Prodotto

• Institute of atmospheric sciences and climate (ISAC) (Istituto)

Autore CNR di

• ANTONELLO PROVENZALE (Persona)
• JOST DIEDRICH GRAF VON HARDENBERG (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Physical review letters (Rivista)