eprintid: 10205877
rev_number: 7
eprint_status: archive
userid: 699
dir: disk0/10/20/58/77
datestamp: 2025-03-11 13:42:00
lastmod: 2025-03-11 13:42:00
status_changed: 2025-03-11 13:42:00
type: article
metadata_visibility: show
sword_depositor: 699
creators_name: Priyadarshi, Abhinav
creators_name: Prentice, Paul
creators_name: Eskin, Dmitry
creators_name: Lee, Peter D
creators_name: Tzanakis, Iakovos
title: Synchronized acoustic emission and high-speed imaging of
cavitation-induced atomization: The role of shock waves
ispublished: pub
divisions: UCL
divisions: B04
divisions: F45
keywords: Ultrasonic atomization, Cavitation bubbles, water, Isopropyl alcohol, Glycerol, high-speed imaging, Acoustic emissions, Shock waves
note: © The Author(s), 2025. This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. https://creativecommons.org/licenses/by/4.0/
abstract: This study experimentally investigates the role of cavitation-induced shock waves in initiating and destabilizing capillary (surface) waves on a droplet surface, preceding atomization. Acoustic emissions and interfacial wave dynamics were simultaneously monitored in droplets of different liquids (water, isopropyl alcohol and glycerol), using a calibrated fiber-optic hydrophone and high-speed imaging. Spectral analysis of the hydrophone data revealed distinct subharmonic frequency peaks in the acoustic spectrum correlated with the wavelength of capillary waves, which were optically captured during the onset of atomization from the repetitive imploding bubbles. This finding provides the first direct evidence that the wavelength of the growing surface waves, which governs capillary instability resulting in droplet breakup, is linked to the periodicity of shock waves responsible for the onset of the subharmonic frequencies detected in the acoustic spectra. This work contributes to a deeper understanding of ultrasonic atomization, signifying the role of cavitation and shock waves in the atomization process.
date: 2025-02
date_type: published
publisher: ELSEVIER
official_url: https://doi.org/10.1016/j.ultsonch.2025.107233
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 2358786
doi: 10.1016/j.ultsonch.2025.107233
medium: Print-Electronic
pii: S1350-4177(25)00012-4
lyricists_name: Lee, Peter
lyricists_id: PLEEX57
actors_name: Lee, Peter
actors_id: PLEEX57
actors_role: owner
funding_acknowledgements: EP/W006774/1 [UK Engineering and Physical Sciences Research Council (EPSRC)]; EP/W006154/1 [UK Engineering and Physical Sciences Research Council (EPSRC)]; EP/W00593X/1 [UK Engineering and Physical Sciences Research Council (EPSRC)]; NIF\R1\221238 [Royal Society via the Isaac Newton International Fellowship]; 1203770538 [British Council via the International Science Partnerships Fund]
full_text_status: public
publication: Ultrasonics Sonochemistry
volume: 113
article_number: 107233
pages: 13
event_location: Netherlands
issn: 1350-4177
citation:        Priyadarshi, Abhinav;    Prentice, Paul;    Eskin, Dmitry;    Lee, Peter D;    Tzanakis, Iakovos;      (2025)    Synchronized acoustic emission and high-speed imaging of cavitation-induced atomization: The role of shock waves.                   Ultrasonics Sonochemistry , 113     , Article 107233.  10.1016/j.ultsonch.2025.107233 <https://doi.org/10.1016/j.ultsonch.2025.107233>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10205877/1/Synchronized%20acoustic%20emission%20and%20high-speed%20imaging%20of%20cavitation-induced%20atomization%20The%20role%20of%20shock%20waves.pdf