Volume Factor in Cavitation Erosion
The use of destructive cavitation attack as a means of excavating material is of fairly recent vintage. In the main, the cavitation is generated either at the center of a jet which passes through air, or on the perimeter of a jet traveling underwater. Conventional practice has been to examine the jet pressure and the system cavitation number, as the most meaningful parameters in the program. Further, it has been suggested that damage occurs in a power relationship with velocity, such that relatively little increase in supply pressure dramatically improves excavation rate. Use of jet cavitation, however, occurs through an exit nozzle whose diameter can be changed, thereby changing volume with changing velocity. The results of such a change is shown to tie cavitation damage more powerfully to volume flow than to velocity. A specific example is in cavitation erosion of a high strength igneous rock which remained virtually undamaged at 70 MPa driving pressure but was substantially eroded
D. A. Summers, "Volume Factor in Cavitation Erosion," Proceedings of the 6th International Conference on Erosion by Liquid and Solid Impact., Cavendish Laboratory, University of Cambridge, Jan 1983.
6th International Conference on Erosion by Liquid and Solid Impact.
Mining and Nuclear Engineering
United States. Army
United States. Navy
Royal Aircraft Establishment, Farnborough, Hamps, Engl
United States. Air Force
Ministry of Defence, UK
Article - Conference proceedings
© 1983 Cavendish Laboratory, University of Cambridge, All rights reserved.