How to tame a free non-laminar Savart sheet ...
Document type :
Compte-rendu et recension critique d'ouvrage
Title :
How to tame a free non-laminar Savart sheet into individual jets?
Author(s) :
Oulded Taled Salah, Sofiene [Auteur]
Université de Liège
Group for Research and Applications in Statistical Physics [GRASP]
Chouk, Ghada [Auteur]
Duchesne, Alexis [Auteur correspondant]
Acoustique Impulsionnelle & Magnéto-Acoustique Non linéaire - Fluides, Interfaces Liquides & Micro-Systèmes - IEMN [AIMAN-FILMS - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
de Cock, Nicolas [Auteur]
Université de Liège
Abrougui, Khaoula [Auteur]
Lebeau, Frédéric [Auteur]
Université de Liège
Dorbolo, Stéphane [Auteur]
Group for Research and Applications in Statistical Physics [GRASP]
Université de Liège
Group for Research and Applications in Statistical Physics [GRASP]
Chouk, Ghada [Auteur]
Duchesne, Alexis [Auteur correspondant]
Acoustique Impulsionnelle & Magnéto-Acoustique Non linéaire - Fluides, Interfaces Liquides & Micro-Systèmes - IEMN [AIMAN-FILMS - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
de Cock, Nicolas [Auteur]
Université de Liège
Abrougui, Khaoula [Auteur]
Lebeau, Frédéric [Auteur]
Université de Liège
Dorbolo, Stéphane [Auteur]
Group for Research and Applications in Statistical Physics [GRASP]
Journal title :
International Journal of Multiphase Flow
Pages :
104032
Publisher :
Elsevier
Publication date :
2022
ISSN :
0301-9322
English keyword(s) :
Savart sheet
Free surface flow
Jets
Droplets
Free surface flow
Jets
Droplets
HAL domain(s) :
Sciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des fluides [physics.class-ph]
English abstract : [en]
In this article, we study the division of a non-laminar Savart sheet into individual jets by mean of local disturbances. We paint a precise portrait of a free non-laminar Savart sheet formed by the vertical impact of a jet ...
Show more >In this article, we study the division of a non-laminar Savart sheet into individual jets by mean of local disturbances. We paint a precise portrait of a free non-laminar Savart sheet formed by the vertical impact of a jet on a horizontal disk, its evolution in the air and its break up.We then generate local disturbances, outside of the disk circumference, triggered by N radial triangular prisms placed directly in the non-laminar sheet. We show that, under given flow conditions and geometrical parameters for the triangular prisms, the sheet splits into individual jets. Depending on the incoming flow rate Q and on the geometry of the prism, the number of jets n can be either stable (and equal to N jets) or variable due to elastic coalescing of neighboring jets. Phase diagrams (Q, n) are obtained from experimental measurements for different geometrical parameters of triangular prisms. A semi-empirical model, which explains the generation of individual jets, is established. Finally, we characterize the droplets emitted from the non-laminar Savart sheet and from the jets in terms of diameters.Show less >
Show more >In this article, we study the division of a non-laminar Savart sheet into individual jets by mean of local disturbances. We paint a precise portrait of a free non-laminar Savart sheet formed by the vertical impact of a jet on a horizontal disk, its evolution in the air and its break up.We then generate local disturbances, outside of the disk circumference, triggered by N radial triangular prisms placed directly in the non-laminar sheet. We show that, under given flow conditions and geometrical parameters for the triangular prisms, the sheet splits into individual jets. Depending on the incoming flow rate Q and on the geometry of the prism, the number of jets n can be either stable (and equal to N jets) or variable due to elastic coalescing of neighboring jets. Phase diagrams (Q, n) are obtained from experimental measurements for different geometrical parameters of triangular prisms. A semi-empirical model, which explains the generation of individual jets, is established. Finally, we characterize the droplets emitted from the non-laminar Savart sheet and from the jets in terms of diameters.Show less >
Language :
Anglais
Popular science :
Non
Source :
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