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On the onset of transient cavitation in gassy liquids

AutorGaete Garretón, Luis; Vargas Hernández, Yolanda; Vargas Herrera, R.; Gallego Juárez, Juan Antonio; Montoya Vitini, Fausto
Fecha de publicación1997
EditorAcoustical Society of America
CitaciónJournal of the Acoustical Society of America 101 (5 part.1) : 2536-2540 (1997)
ResumenThis paper deals with a numerical and experimental study of ultrasound induced cavitation. On the basis of a computational analysis of Gilmore’s equation for the individual bubble dynamics, a slight decrease in the pressure radiated by a single bubble immediately before reaching the transient cavitation regime is predicted. Experiments presented in this paper confirm this observation. Therefore, a new method to detect the inception of transient cavitation is proposed. The numerical analysis of a single bubble behavior, carried out for the different bubble sizes, suggests that two distinct ‘‘types’’ of transient cavitation may occur in a cavitation field in connection with the relative number of bubbles involved in the process. The experiments seem to confirm the theoretical hypothesis. The experimental work consisted mainly of insonifying distilled water, with a gas content of about 75% of saturation, at 20 kHz and analyzing the resulting acoustic emissions.
Descripción5 páginas, 7 figuras
Versión del editorhttp://dx.doi.org/10.1121/1.418495
URIhttp://hdl.handle.net/10261/71896
DOI10.1121/1.418495
ISSN0001-4966
E-ISSN1520-8524
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