Supercavitating flow over wedges (half-wedges) attached to a solid boundary can be simulated by air injection in the wake of the wedges. Information on cavity formation behind single wedges in a boundary layer, specifically, cavity length, air demand, and pressure distribution inside and outside
the cavity as a function of wedge characteristics (height and angle), stream velocity, and blockage effect was obtained by experiment. Drag on such single artificially supercavitating wedges was measured. Experiments were carried out in a conduit of rectangular cross section with the wedges attached to the bottom. The ultimate purpose of the investigation was to
examine whether a cavity generated on a flat plate has a skin friction reducing effect and how such a cavity can be generated most efficiently by a wedge without introducing important supplementary drag.
Prepared for David Taylor Model Basin, Department of the Navy under Bureau of Ships General Hydromechanics Research Program S-R009 01 01 Office of Naval Research Contract Nonr 710(43)
Stefan, Heinz G.; Anderson, Alvin G..
Cavity Formation and Associated Drag in a Supercavitating Flow Over Wedges in a Boundary Layer.
St. Anthony Falls Hydraulic Laboratory.
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