ICLASS 94
Proceedings of the Sixth International Conference on Liquid Atomization and Spray Systems

ISBN Print: 978-1-56700-019-1

ISBN Online: 978-1-56700-446-5

BREAKUP OF A WATER JET IN HIGH VELOCITY CO-FLOWING AIR

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DOI: 10.1615/ICLASS-94.150
pages 110-117

E.J. Hopfinger LEG/IMG, CNRS & UJF, Grenoble, France

Juan C. Lasheras Department of Mechanical & Aerospace Engineering, University of California, San Diego, La Jolla, CA 92093-0411, USA

Sinopsis

Flow visualizations by high speed cameras of the disintegration of a liquid (water) jet in a high-velocity co-axial gas (air) jet allowed the classification of breakup regimes according to the Weber number and momentum ratio. A momentum criterion for the pinch-off of the liquid core and the onset of a superpulsating mode is proposed. Drop size measurements in the high momentum ratio show a dependence of the drop size on the inverse square of the gas velocity suggesting a secondary breakup mechanism.

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