The effect of nose radius on the cavitation-inception characteristics of two-dimensional hydrofoils
Abstract
Results of an analytical investigation of the cavitation properties of modified marine propeller-type hydrofoils are presented. In particular, dependence of the critical cavitation number and the cavitation-free, angle-of-incidence range on changes in the leading-edge thickness is determined. It is shown that within a narrow range of changes of leading-edge thickness, a delay in inception is possible, depending on the design problem under consideration. An increase in critical inception speed, accompanied by a sacrifice in some of the cavitation-free, angle-of-incidence range occurs for a small increase in the leading-edge thickness. A range of thickness changes exists for which beneficial results can be obtained.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- July 1974
- Bibcode:
- 1974STIN...7515008V
- Keywords:
-
- Cavitation Flow;
- Hydrofoils;
- Marine Propulsion;
- Propeller Drive;
- Two Dimensional Flow;
- Flow Characteristics;
- Flow Equations;
- Numerical Analysis;
- Performance Tests;
- Fluid Mechanics and Heat Transfer