A THEORETICAL STUDY OF THE FORCE AND MOMENT ON AN OSCILLATING SUPERCAVITATED HYDROFOIL NEAR A FREE SURFACE.
Final rept. Dec 66-Nov 67,
CORNELL AERONAUTICAL LAB INC BUFFALO NY
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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
- Marine Engineering
- Fluid Mechanics