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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Печать: 2152-5102
ISSN Онлайн: 2152-5110

Выпуски:
Том 46, 2019 Том 45, 2018 Том 44, 2017 Том 43, 2016 Том 42, 2015 Том 41, 2014 Том 40, 2013 Том 39, 2012 Том 38, 2011 Том 37, 2010 Том 36, 2009 Том 35, 2008 Том 34, 2007 Том 33, 2006 Том 32, 2005 Том 31, 2004 Том 30, 2003 Том 29, 2002 Том 28, 2001 Том 27, 2000 Том 26, 1999 Том 25, 1998 Том 24, 1997 Том 23, 1996 Том 22, 1995

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v24.i4-6.110
pages 544-555

Characterization of Sprays Produced by Low Frequency Ultrasonic Atomizers

Jean Cousin
UMR 6614-CORIA, Technopole du Madrillet, B.P. 12 Avenue de l'Université 76801 Saint-Etienne du Rouvray Cedex, France
Christophe Dumouchel
Université et INSA de Rouen France
Daniel Sindayihebura
Department of Mechanical Engineering, Université Catholique de Louvain, Louvain-la-Neuve, Belgium

Краткое описание

The atomization of liquids by means of low frequency ultrasonic atomizers results from unstable surface waves generated on the free surface of a thin liquid film. These unstable waves are obtained from the tuning of the amplitude and the frequency of an imposed oscillation. The thin liquid film develops as the liquid spreads over the atomizing surface of the atomizer. This paper focuses on a systematic experimental analysis of the sprays produced by this type of atomizers. The thickness of the liquid film is measured. Its effects on the drop diameter are studied as are the effects of both the liquid's physical properties and the ultrasonic atomizer's characteristics. The relationship between the mean drop diameter and the surface wave wavelength is accurately determined. A mathematical approach based on the Maximum Entropy Formalism is successfully applied to theoretically determine the drop size distribution of the spray.


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