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Titolo:
STUDYING BURGERS MODELS TO INVESTIGATE THE PHYSICAL MEANING OF THE ALIGNMENTS STATISTICALLY OBSERVED IN TURBULENCE
Autore:
ANDREOTTI B;
Indirizzi:
LAB PHYS STAT,24 RUE LHOMOND F-75231 PARIS 05 FRANCE
Titolo Testata:
Physics of fluids
fascicolo: 3, volume: 9, anno: 1997,
pagine: 735 - 742
SICI:
1070-6631(1997)9:3<735:SBMTIT>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
HOMOGENEOUS ISOTROPIC TURBULENCE; INTENSE VORTICITY; INTERMITTENCY; FLOWS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
14
Recensione:
Indirizzi per estratti:
Citazione:
B. Andreotti, "STUDYING BURGERS MODELS TO INVESTIGATE THE PHYSICAL MEANING OF THE ALIGNMENTS STATISTICALLY OBSERVED IN TURBULENCE", Physics of fluids, 9(3), 1997, pp. 735-742

Abstract

The alignments between the vorticity, the vortex stretching vector, the pressure Hessian eigenvectors and the strain rate eigenvectors are computed and discussed in the case of the Burgers' vortex and the Burgers' layer. It is shown that the main physical properties of these models can be deduced from these alignments. Following this example, the alignments between these vectors in turbulent flows are interpreted asdominated by stretched, coherent and locally quasi-bidimensional regions. This induces a new and safer classification for the strain rate and the pressure Hessian eigenvalues. (C) 1997 American Institute of Physics.

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Documento generato il 29/11/20 alle ore 15:22:36