Incipient Cavitation in Axial Flow Pumps Part II Hydrodynamic Noise and Tip Vortex Cavitation

摘要

The first occurrence of noise in an axial flow pump is correlated with the visually observed inception of cavitation for a range of tip clearancesudand flow rates. The magnitude of the sound level in the machine is determined as a function of the cavitation number for several tip clearances. However, the peak sound level does not depend much on tip clearances, andudis about 35 db. above the ambient level.