Self-adaptation and viscous selection in concentrated two-dimensional vortex dipoles

D. Sipp 1 L. Jacquin 1 Carlo Cosssu 1, 2, *
* Auteur correspondant
1 Meudon - ONERA - The French Aerospace Lab
2 LadHyX - Laboratoire d'hydrodynamique
Abstract : In this Letter we deal with 2D direct numerical simulations of concentrated vortex dipoles. We show that various initial dipolar vorticity distributions evolve towards a specific family of dipoles parametrized by the dipole aspect ratio a/b, where a is the radius of the vortices based on the vorticity polar moment in half a plane and b is the separation between the vortex centroids. This convergence is achieved through viscous effects. The considered Reynolds numbers Re= G/v are Re= 3000 and Re= 15000. Moreover, all the dipoles of this family are quasi-steady solutions of the Euler equations. Their scatter plots and drift velocities are given for a/b<03. © 2000 American Institute of Physics.
Type de document :
Article dans une revue
Physics of Fluids, American Institute of Physics, 2000, 12 (2), pp.245-248. 〈10.1063/1.870325〉
Liste complète des métadonnées

Littérature citée [6 références]  Voir  Masquer  Télécharger
https://hal-polytechnique.archives-ouvertes.fr/hal-01025367
Contributeur : Denis Roura <>
Soumis le : jeudi 11 septembre 2014 - 14:07:11
Dernière modification le : jeudi 10 mai 2018 - 02:01:39
Document(s) archivé(s) le : vendredi 12 décembre 2014 - 10:07:25

Fichier

1.870325.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Collections

X-LADHYX | PARISTECH | X | ONERA | X-DEP-MECA

Citation

D. Sipp, L. Jacquin, Carlo Cosssu. Self-adaptation and viscous selection in concentrated two-dimensional vortex dipoles. Physics of Fluids, American Institute of Physics, 2000, 12 (2), pp.245-248. 〈10.1063/1.870325〉. 〈hal-01025367〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

398

Téléchargements de fichiers

298

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD