Analysis and simulation of propeller cavitation degree to continuum spectrum

Shipping-radiated noise include mechanism noise, propeller noise and water-power noise. Propeller cavitation noise is the main noise when cavitation happens. While the shipping cavitation developed, the fall measure of per times frequency minished gradually in high frequency. In this paper, analyse the condition of cavitation, and establish propeller cavitation spectrum model, finally interpretation the above phenomenon according to simulation the model at different conditions and find that vacuole average radius´s difference make the amplitude increased different at high frequency section.