Experimental study of model size effects on cavitation and ventilation of surface piercing struts
Abstract
An experimental program was conducted in the Lockheed Underwater Missile Facility to determine the effect of model size on the cavitation and ventilation of vertically, surface-piercing struts. The struts tested had chord lengths of 0.5, 1.0, and 2.0 ft., were manufactured to the same section profile, and were tested at a nominal submergence of one chord length. Tests were conducted at speeds from 17 to 32 fps for yaw angles ranging from 4 to 8 degrees. The sideforce and drag were measured and are presented for cavitating conditions preceeding ventilation inception and for fully-ventilated conditions. Motion pictures of the flow were used to determine quantitative features of the cavitation, spray sheet, and the mechanism of ventilation inception.
- Publication:
-
Lockheed Missiles and Space Co. Report
- Pub Date:
- November 1970
- Bibcode:
- 1970lock.rept.....W
- Keywords:
-
- Cavitation Flow;
- Flow Distribution;
- Hydrofoil Craft;
- Struts;
- Dynamic Models;
- Performance Tests;
- Ventilation;
- Vortices;
- Fluid Mechanics and Heat Transfer