Poster De Conférence Année : 2021

Poster: DNS on spray formation

Résumé

We depict and analyse the successive steps of atomisation via vortex dynamics for a turbulent liquid jet by using Direct Numerical Simulations. The top panels show the spatio-temporal representation of the interfacial dynamics coloured by the streamwise vorticity. Magnified views of the interface with the three-dimensional coherent vortical structures visualised by the Q-criterion are shown in the bottom panels. At early stages of the atomisation, a periodic array of Kelvin-Helmholtz rings are formed. Then, the vortex rings are deformed in the streamwise direction due to a mutual-induction resulting in a `knitting' between two consecutive vortex rings. A careful study of the distribution of vortexsigns show the assembling into counter-rotating vortex pairs.

Fichier principal
Vignette du fichier
Gallery_motion.pdf (44.73 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-04401595 , version 1 (17-01-2024)

Licence

Identifiants

Citer

C. Constante-Amores, L. Kahouadji, O. Matar, J. Chergui, Damir Juric, et al.. Poster: DNS on spray formation. 74th Annual Meeting of the APS Division of Fluid Dynamics, Nov 2021, Phoenix, United States. American Physical Society, ⟨10.1103/APS.DFD.2021.GFM.P0013⟩. ⟨hal-04401595⟩
105 Consultations
14 Téléchargements

Altmetric

Partager

  • More