The Effect of Static Pressure on the Inertial Cavitation Threshold and Collapse Strength

The amplitude of the acoustic pressure required to nucleate a gas and/or vapor bubble in a fluid, and to have that bubble undergo an inertial collapse, is termed the inertial cavitation threshold. The hydrostatic dependence of the inertial cavitation threshold was measured up to 30 MPa in ultrapure water using a high quality factor spherical resonator. The threshold increased linearly with the hydrostatic pressure and was found to be temperature dependent. The strength of the bubble collapse at the threshold was measured in terms of shock waves and light emissions. The shock amplitudes increased linearly with the hydrostatic pressure, while the number of photons increased quadratically. The increase of the collapse strength was attributed to the increased threshold, and therefore to the amount of available acoustic energy.

Name thesis:degree_name

Ph.D. in Physics

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics and Astronomy

Year dc:date.available

2011

Author dc:creator

• Bader, Kenneth Bryan

Contributors dc:contributor

• Charles C. Church
• R. Glynn Holt
• Nathan Murray

• Acoustics
• Cavitation
• Inertial collapse
• Sonoluminescence
• tensile strength
• Water
• Acoustics, Dynamics, and Controls

Repository record dc:identifier

https://egrove.olemiss.edu/etd/1511

OAI identifier oai:identifier

oai:egrove.olemiss.edu:etd-2510