MRI measurement of dynamics of the liquid and a dissolved gas during acoustic cavitation

Authors

  • I.V. Mastikhin Dept. of Physics, University of New Brunswick, 8 Bailey Dr., NB, E3B 5A3, Canada
  • B. Newling Dept. of Physics, University of New Brunswick, 8 Bailey Dr., NB, E3B 5A3, Canada
  • N. Hetherington Dept. of Physics, University of New Brunswick, 8 Bailey Dr., NB, E3B 5A3, Canada
  • S. Kristoffersen Dept. of Physics, University of New Brunswick, 8 Bailey Dr., NB, E3B 5A3, Canada

Keywords:

Acoustics, Dissolution, Electroacoustic transducers, Internet protocols, Liquids, Magnetic resonance imaging, Acoustic cavitations, Acoustic pressures, Average residence time, Cavitating bubbles, Dissolved gas, Filtered water, Gas molecules, High-frequency noise, ON dynamics, Preparation procedures, Relaxation parameter, Site exchange, Tap water

Abstract

A study was conducted to perform magnetic resonance imaging (MRI) measurement of dynamics of the liquid and dissolved gas during acoustic cavitation. The study focused on obtaining information on dynamics of molecules that constituted the bubbles and the surrounding liquid. The information was acquired directly using the MRI techniques of measuring the displacement and the relaxation parameters of water along with an NMR-sensitive highly soluble gas as a function of the acoustic pressure and the water preparation procedures. The obtained data were examined using a two-site exchange model to extract estimates of the average residence time of gas molecules inside the cavitating bubbles. The cavitation onset was detected at 0.6 Atm in the tap water and at 0.7 Atm in the filtered water by the appearance of the high frequency noise detected by the hydrophone.

Published

2009-09-01

How to Cite

1.
Mastikhin I, Newling B, Hetherington N, Kristoffersen S. MRI measurement of dynamics of the liquid and a dissolved gas during acoustic cavitation. Canadian Acoustics [Internet]. 2009Sep.1 [cited 2021May16];37(3):116-7. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2161

Issue

Section

Proceedings of the Acoustics Week in Canada

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