Experimental Techniques for the Determination of Tip Vortex Cavitation on Ship Propellers. Presented at the ASME- JSME (3rd) Joint Fluids Engineering Conference, San Francisco, California on July 18-23, 1999.

摘要

The accuracy of tip vortex inception measurements on propellers is investigated using visual observations, acoustic measurements and measurements of the cavitating vortex diameter. The conclusion is that visual observation is at least as accurate as the other methods. When the propeller is to be optimized in order to delay inception it is necessary to distinguish the location and type of vortex at inception. A distinction is made between trailing vortex cavitation. Each type is expected to be controlled by different parameters. In further investigations these vortex types are to be used for the suppression of tip vortex cavitation.