SOME EXPERIMENTS WITH A LIQUID FILLED ACOUSTIC RESONATOR SHOWING THE EXISTENCE OF STABLE BUBBLES IN WATER.
Abstract
Experiments were performed with a water-filled acoustic resonator to measure sound velocity in water as a function of temperature and undissolved gas. The measurements on gas-free distilled water agree well with theory, but measurements on sea water do not. This discrepancy can be accounted for by the existence of a stable microbubble population in the sea water, and by changes to this population as a result of the addition of thermal energy. Results showing that vacuum degassing can increase the sound velocity in the sea water sample demonstrated that a stable bubble population was present. Additional studies are needed for a clearer understanding of the nature of the stable bubbles and the role of particles in stable bubble formation. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 18, 1967
- Accession Number
- AD0667585
Entities
People
- Alexander J. Hiller
Organizations
- United States Naval Research Laboratory