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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.v2.i4.50
pages 445-462

MEASUREMENTS AND PREDICTIONS OF A LIQUID SPRAY FROM AN AIR-ASSIST NOZZLE

Daniel L. Bulzan
NASA Lewis Research Center, Cleveland, Ohio 44135
Yeshayahou Levy
Faculty of Aerospace Engineering, Technion - Israel Institute of Technology, Haifa, Israel
Suresh Aggarwal
University of Illinois at Chicago
Susheel Chitre
The University of Illinois at Chicago, Chicago, Illinois 60680

RÉSUMÉ

Droplet size and velocity and gas velocity were measured in a water spray using a two-component phase/Doppler particle analyzer. Л complete set of measurements was obtained at axial locations from 5 to 50 cm downstream of the nozzle. The nozzle used was a simple axisymmetric air-assist nozzle. The sprays produced using the atomizer were extremely fine. Sauter mean diameters were less than 20 μm at all locations. Measurements were obtained for droplets ranging from 1 to 50 μm. The gas phase was seeded with micrometer-sized droplets, and droplets having diameters of 1.4 μm and less were used to represent gas-phase properties. Measurements were compared with predictions from a multiphase computer model. Initial conditions for the model were taken from measurements at 5 cm downstream. Predictions for both the gas phase and the droplets showed relatively good agreement with the measurements.


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