A THEORETICAL STUDY OF THE FORCE AND MOMENT ON AN OSCILLATING SUPERCAVITATED HYDROFOIL NEAR A FREE SURFACE.
Abstract
The approach assumes linearized, two-dimensional, potential flow but no further limitations are placed on the values of Froude number, cavitation number, or depth-to-chord ratio. Account is taken of the effect of gravity on both the air-water interface and the cavity surface. The report discusses the approach to the general problem which is based on a representation of the system by distributions of elemental singularities and on a double linearization procedure. The latter feature separates the problem into a quasi-steady and an unsteady part in which the governing equations of the unsteady problem depend on the solutions to the quasi-steady problem. The quasi-steady solution is obtained for a supercavitated, flat-plate foil near a free surface taking account of the effects of gravity. Results for the limiting case of steady motion are compared with other theories and with experimental data. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1967
- Accession Number
- AD0827202
Entities
People
- Chee Tung
- Irving C. Statler
Organizations
- Calspan