Analysis of passive scalar gradient alignment in a simplified three-dimensional case - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physics of Fluids Année : 2006

Analysis of passive scalar gradient alignment in a simplified three-dimensional case

Résumé

Numerical simulations as well as recent experiments in turbulent three-dimensional flow show a trend of the gradient of a passive scalar to align with the compressional axis of the strain tensor. In two-dimensional flow, however, it has been proved that the most probable orientation of the scalar gradient can be different from the compressional direction. An idealized situation is used to address this question in the three-dimensional case and to suggest a possible way to reexamine the scalar gradient alignment in three-dimensional flow. This kind of analysis can be applied to the material line alignment as well.
Fichier principal
Vignette du fichier
article.pdf (76.79 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-01450378 , version 1 (31-01-2017)

Identifiants

Citer

A. Garcia, M. Gonzalez. Analysis of passive scalar gradient alignment in a simplified three-dimensional case. Physics of Fluids, 2006, 18, pp.58101. ⟨10.1063/1.2196091⟩. ⟨hal-01450378⟩
121 Consultations
117 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More