The University of Southampton
University of Southampton Institutional Repository

The subharmonic oscillations and combination-frequency emissions from a resonant bubble: their properties and generation mechanisms

The subharmonic oscillations and combination-frequency emissions from a resonant bubble: their properties and generation mechanisms
The subharmonic oscillations and combination-frequency emissions from a resonant bubble: their properties and generation mechanisms
Sizing bubbles using a two frequency technique which examines the coupling of a resonant subharmonic oscillation to an imaging beam is not prone to some of the inaccuracies and ambiguities of other methods. This combination frequency subharmonic signal is parametric in nature, and the amplitude onset threshold has been quantified for thirty tethered air bubbles in water. This paper details work which aims to investigate the generation mechanism of a bubble's subharmonic oscillations, and presents results from theoretical consideration of three potential mechanisms: (i) The possibility that at high amplitudes a bifurcation appears in a bubble's volumetric pulsations; (ii) the potential for bubbles driven at twice their resonant frequency to pulsate with a component at their resonant frequency (which is a subharmonic of the driving field); (iii) that surface waves are responsible. The first two mechanisms are examined using a numerical solution to the Gilmore-Akulichev model, and the third using plane surface theory. Whilst all three mechanisms show the potential for generating subharmonic oscillations, the first two demonstrate onset thresholds four and three orders of magnitude higher than the experimental threshold respectively. However, the threshold predicted using surface wave theory shows very good agreement with the experimental results.
1610-1928
59-66
Phelps, A.D.
3f987d72-7fdd-4282-9a58-9ec5f9effcf2
Leighton, T.G.
3e5262ce-1d7d-42eb-b013-fcc5c286bbae
Phelps, A.D.
3f987d72-7fdd-4282-9a58-9ec5f9effcf2
Leighton, T.G.
3e5262ce-1d7d-42eb-b013-fcc5c286bbae

Phelps, A.D. and Leighton, T.G. (1997) The subharmonic oscillations and combination-frequency emissions from a resonant bubble: their properties and generation mechanisms. Acta Acustica united with Acustica, 83 (1), 59-66.

Record type: Article

Abstract

Sizing bubbles using a two frequency technique which examines the coupling of a resonant subharmonic oscillation to an imaging beam is not prone to some of the inaccuracies and ambiguities of other methods. This combination frequency subharmonic signal is parametric in nature, and the amplitude onset threshold has been quantified for thirty tethered air bubbles in water. This paper details work which aims to investigate the generation mechanism of a bubble's subharmonic oscillations, and presents results from theoretical consideration of three potential mechanisms: (i) The possibility that at high amplitudes a bifurcation appears in a bubble's volumetric pulsations; (ii) the potential for bubbles driven at twice their resonant frequency to pulsate with a component at their resonant frequency (which is a subharmonic of the driving field); (iii) that surface waves are responsible. The first two mechanisms are examined using a numerical solution to the Gilmore-Akulichev model, and the third using plane surface theory. Whilst all three mechanisms show the potential for generating subharmonic oscillations, the first two demonstrate onset thresholds four and three orders of magnitude higher than the experimental threshold respectively. However, the threshold predicted using surface wave theory shows very good agreement with the experimental results.

Text
# 1997 Phelps_Leighton (subharmonic) (Acustica).pdf - Version of Record
Restricted to Repository staff only
Request a copy

More information

Published date: January 1997
Organisations: Acoustics Group

Identifiers

Local EPrints ID: 349535
URI: https://eprints.soton.ac.uk/id/eprint/349535
ISSN: 1610-1928
PURE UUID: 17924569-8443-435b-b249-1e6159823781
ORCID for T.G. Leighton: ORCID iD orcid.org/0000-0002-1649-8750

Catalogue record

Date deposited: 07 Mar 2013 11:18
Last modified: 14 Jun 2018 00:36

Export record

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×