Tip Vortices in Unsteady Flows
Abstract
This report describes in brief the activities of our research in, first, cavitation inception, and them, second, tip vortex problems in steady and unsteady flows. There are two components of this work. The first is an experimental study of cavitation inception and cavitation nuclei determination in a variety of laboratory and natural settings. Cavitation and cavitation inception are important aspects of the complex flow associated with propulsion in the ocean environment. Two specific features of this flow were addressed in a long series of reports and publications listed at the end of this report. These features are (1) cavitation inception processes in a large scale turbulent shear flow and (2) cavitation inception and the structure of trailing tip vortices in first steady and then unsteady flows. Finite aspect ratio hydrofoils were used in both studies; the latter unsteadiness was achieved by oscillating the foil in pitch of a point 35% of the chord from the leading edge.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 04, 1992
- Accession Number
- ADA251216
Entities
People
- Allan J. Acosta
- Anthony W. Leonard
Organizations
- California Institute of Technology