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Analysis of the cavitating flow induced by an ultrasonic horn : Numerical 3D simulation for the analysis of vapour structures and the assessment of erosion-sensitive areas

Mottyll, Stephan and Müller, Saskia and Niederhofer, Philipp and Hussong, Jeanette and Huth, Stephan and Skoda, Romuald (2014):
Analysis of the cavitating flow induced by an ultrasonic horn : Numerical 3D simulation for the analysis of vapour structures and the assessment of erosion-sensitive areas. (Publisher's Version)
In: EPJ Web of Conferences, 67, pp. 1-9. EDP Sciences, ISSN 2100-014X,
DOI: 10.25534/tuprints-00014270,
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Item Type: Article
Origin: Secondary publication via Golden Open Access
Status: Publisher's Version
Title: Analysis of the cavitating flow induced by an ultrasonic horn : Numerical 3D simulation for the analysis of vapour structures and the assessment of erosion-sensitive areas
Language: English
Abstract:

This paper reports the outcome of a numerical study of ultrasonic cavitation using a CFD flow algorithm based on a compressible density-based finite volume method with a low-Machnumber consistent flux function and an explicit time integration [15; 18] in combination with an erosion-detecting flow analysis procedure. The model is validated against erosion data of an ultrasonic horn for different gap widths between the horn tip and a counter sample which has been intensively investigated in previous material studies at the Ruhr University Bochum [23] as well as on first optical in-house flow measurement data which is presented in a companion paper [13]. Flow features such as subharmonic cavitation oscillation frequencies as well as constricted vapour cloud structures can also be observed by the vapour regions predicted in our simulation as well as by the detected collapse event field (collapse detector) [12]. With a statistical analysis of transient wall loads we can determine the erosion sensitive areas qualitatively. Our simulation method can reproduce the influence of the gap width on vapour structure and on location of cavitation erosion.

Journal or Publication Title: EPJ Web of Conferences
Journal volume: 67
Publisher: EDP Sciences
Classification DDC: 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Divisions: 16 Department of Mechanical Engineering > Fluid Mechanics and Aerodynamics (SLA)
Date Deposited: 30 Nov 2020 15:51
Last Modified: 30 Nov 2020 15:52
DOI: 10.25534/tuprints-00014270
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-142707
Additional Information:

EFM13 – Experimental Fluid Mechanics 2013

URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/14270
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