Hydrodynamics, Acoustics and Scaling of Traveling Bubble Cavitation
Abstract
Recent observations of the geometries of growing and collapsing bubbles over axisymmetric headforms have revealed the complexity of the "microfluidmechanics" associated with these flows. Among the complex features observed were bubble to bubble interaction, cavitation noise generation and bubble interaction with the boundary layer which leads to the shearing of the underside of the bubble and alters the collapsing process. All of these previous tests were performed on small headform sizes. The focus of this research is to determine the dynamics governing the growth and collapse of traveling bubbles and to analyze the scaling effects due to variations in geometry size, Reynolds number and cavitation number. For this effect, cavitating flows over Schiebe headforms of different sizes (5.08 cm, 25.4 cm and 50.8 cm in diameter) were studied in the David Taylor Large CAvitation Channel (LCC). This thesis presents the scaling effects captured on high-speed film and electrode sensors as well as the noise signals generated during the collapse of the cavities.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 24, 1993
- Accession Number
- ADA273846
Entities
People
- Yan P. Kuhn De Chizelle
Organizations
- California Institute of Technology