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Atomization and Sprays
Facteur d'impact: 1.262 Facteur d'impact sur 5 ans: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Imprimer: 1044-5110
ISSN En ligne: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v6.i1.40
pages 77-94

EXPERIMENTAL AND NUMERICAL STUDY OF THE ATOMIZATION OF A PLANAR LIQUID SHEET

Antonio Lozano
Laboratorio de Investigación en Fluidodinámica y Tecnologías de la Combustión (LIFTEC), Consejo Superior de Investigaciones Científicas (CSIC) - Universidad de Zaragoza, Zaragoza, Spain
Charles J. Call
Centro Politécnico Superior de Ingenieros, Area de Mecánica de Fluidos, Universidad de Zaragoza, 50015 Zaragoza, Spain
Cesar Dopazo
CIEMAT, Av. Complutense 22 Madrid, 28040 Spain
Antonio Garcia-Olivares
LITEC/CSIC, Zaragoza, 50015 Spain

RÉSUMÉ

The disintegration of a water sheet into a spray has been studied with the objective of improving the understanding of the fundamental mechanisms of atomization. Flow visualization, frequency analysis, and LDV are used to identify and characterize the importance of vortex interactions in the atomization process, reflected in the formation of liquid filaments. A three-dimensional vortex dynamics simulation has been developed to model the instability growth in the flow. Preliminary results support the hypothesis that it is the interaction between the vorticity generated by the high-speed air and the vorticity present inside the liquid sheet, generated in the nozzle, which leads to complex disintegration phenomena.


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