Some Environmental Effects on Headform Cavitation Inception
DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD SHIP PERFORMANCE DEPT
Pagination or Media Count:
Cavitation-inception tests were performed on two headforms for which changes were made in the environment. Quantities which were varied, included type and amount of dissolved gas, chemical additives, time rate of change to cause inception, and temperature changes. Experimental procedure and relative air content had an appreciable effect on cavitation inception. Both headforms had the same designed minimum pressure coefficient however, for one it was located 0.03 diam from the nose, and for the other, 0.73 diam. Inception was characterized by traveling bubbles on both headforms, with significant differences occurring in the bubble dynamics. Inception was determined visually and by counting occurrences.
- Fluid Mechanics