Archives of Acoustics, 31, 4, pp. 481-487, 2006

Hydroacoustic activity of the ship propeller operation

J. A. Szantyr
Gdańsk University of Technology

T. Koronowicz
Institute of Fluid Flow Machinery

The paper presents ship propellers as the source of a variable pressure field in water. The frequency spectrum of this field covers the entire audible range and beyond this range. This pressure field is generated by several physical mechanisms: the rotating hydrodynamic loading of the blades, the displacement effect of the rotating blades, the boundary layer effect, and, first of all, various forms of cavitation. The relative importance of these mechanisms is analysed and the methods of the theoretical prediction of the propeller generated variable pressure field are briefly presented. The results of the prediction are compared with experimental data.
Keywords: ship propellers, cavitation, hydroacoustics
Full Text: PDF
Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).