Acoustic cavitation inception in water and in insonated root tips
Abstract
An analysis of two aspects of air bubble nucleation is presented. Part I describes the role of particulate matter in acoustic cavitation inception; Part II describes the growth of air bubbles by rectified diffusion in insonated root tips. It was discovered that a modification of some earlier analyses of cavity nucleation from motes leads to a correct prediction of the variation of the acoustic cavitation inception threshold for kilohertz frequencies in water for a range of physical variables. It was also discovered that acoustic emissions from insonated root tips could be attributed to the growth of air bubbles by rectified diffusion.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- September 1978
- Bibcode:
- 1978STIN...7915272C
- Keywords:
-
- Cavitation Flow;
- Nucleation;
- Plant Roots;
- Water;
- Acoustic Emission;
- Acoustics;
- Bubbles;
- Cavities;
- Mathematical Models;
- Fluid Mechanics and Heat Transfer