Mesh resolution effects on primary atomization simulations - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Atomization and Sprays Année : 2020

Mesh resolution effects on primary atomization simulations

Résumé

In this work, we use Direct Numerical Simulation (DNS) through a Volume of Fluid (VOF) solver with Adaptive Mesh Refinement (AMR) to analyze the atomization of a pulsating round liquid jet with a narrow length scale range configuration. We propose three grid sizes based on characteristic scales we estimate from the deformation and fragmentation processes of this problem. We compute drop statistics and general spray features for each case. We found that mesh resolution affects the atomization rate and the probability density function of droplets size and position, not only for the under-resolved drops but all liquid structures. The two simulations with higher grid refinement presented volume-weighted distribution with minor differences. Therefore, we propose assessing the accuracy of atomization simulations based on the volume fraction of under-resolved structures.
Fichier principal
Vignette du fichier
Preprint_MeshResolution2020.pdf (12.82 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03080699 , version 1 (06-01-2021)

Identifiants

Citer

Cesar I Pairetti, Santiago Marquez Damian, Norberto M Nigro, Stéphane Popinet, Stéphane Zaleski. Mesh resolution effects on primary atomization simulations. Atomization and Sprays, 2020, 30 (12), pp.913-935. ⟨10.1615/AtomizSpr.2020035413⟩. ⟨hal-03080699⟩
150 Consultations
195 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More