Northampton Electronic Collection of Theses and Research

Experimental study and analytical model of the cavitation ring region with small diameter ultrasonic horn

García-Atance Fatjó, G., Torres Pérez, A. and Hadfield, M. (2011) Experimental study and analytical model of the cavitation ring region with small diameter ultrasonic horn. Ultrasonics Sonochemistry. 18(1), pp. 73-79. 1350-4177.

Item Type: Article
Abstract: Experiments of cavitation erosion are performed on a surface using the “stationary specimen method”. A small diameter horn of 5 mm is selected instead of using the standard horn of 15.9 mm. The experiments are performed according to these parameters: an excitation frequency of the horn of 20 kHz, a gap between the horn and the specimen within the range from 0.05 to 0.5 mm and the displacement amplitude of the horn within a range of 15–50 μm. After examination of the samples, two erosion patterns can be clearly distinguished, one circular shape centred in the origin and a ring shape around. Moreover, it has been observed that the diameter of this ring shape, the cavitation ring region, is a function that depends on the amplitude and the gap. Existence of the cavitation ring region under the mentioned conditions is explained using a theoretical model based on the combination of Fluid Mechanics and Analytical Mechanics. Results after application of this model reveal the satisfactory agreement between the numerical output and the experimental data.
Uncontrolled Keywords: Ultrasonic cavitation, clusters, thin layer, Hamilton’s Principle
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA417.4 Ultrasonic testing
Creators: García-Atance Fatjó, G, Torres Pérez, Angel and Hadfield, M
Publisher: Elsevier
Faculties, Divisions and Institutes: Faculties > Faculty of Arts, Science & Technology > Engineering
Date: January 2011
Date Type: Publication
Page Range: pp. 73-79
Journal or Publication Title: Ultrasonics Sonochemistry
Volume: 18
Number: 1
Language: English
ISSN: 1350-4177
Status: Published / Disseminated
Refereed: Yes

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