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Título : Numerical modeling of the ultrasonic cavitation field and experimental evaluation of bubble density
Autor : Dubus, Bertrand; Granger, C.; Mosbah, P.; Moussatov, A.; Schmit, H.; Sztor, L.; Campos-Pozuelo, Cleofé
Palabras clave : Ultrasonic cavitation field
Numerical model
Bubble density
Acoustic pressure
Electrical resistance of the medium
ATILA code
Fecha de publicación : sep-2002
Editor: Sociedad Española de Acústica
Citación : Forum Acusticum Sevilla 2002. Nonlinear Acoustics ; NON-01-004-IP
Resumen: A numerical model of ultrasonic cavitation field is described. It is based on a phenomenological description of a cavitating fluid as a non linear fluid whose characteristics (sound speed, density) depend upon the bubble density. To obtain the constitutive relationship between bubble density and acoustic pressure, a real-time measurement method of the bubble density, relying upon the variation of the electrical resistance of the medium, is proposed. The finite element formulation of the model is derived and implemented in the ATILA code. Computational results on the cavitation field created by a cylindrical concentrator are presented.
Descripción : 6 pages.-- PACS nr.: 43.35 Ei.-- Communication presented at: Forum Acusticum Sevilla 2002 (Sevilla, Spain, 16-20 Sep 2002), comprising: 3rd European Congress on Acoustics; XXXIII Spanish Congress on Acoustics (TecniAcústica 2002); European and Japanese Symposium on Acoustics; 3rd Iberian Congress on Acoustics.-- Special issue of the journal Revista de Acústica, Vol. XXXIII, year 2002.
URI : http://hdl.handle.net/10261/7958
ISBN : 84-87985-07-6
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