Marine propeller is the dominant exciter of the hull surface above it causing high level of noise and vibration in the ship structure. Recent successful developments have led to non-cavitating propeller designs and thus present focus is the non-cavitating characteristics of propeller such as hydrodynamic noise and its induced hull excitation. In this paper, analytic source model of propeller non-cavitating noise, described by longitudinal quadrupoles and dipoles, is suggested based on the propeller hydrodynamics. To find the source unknown parameters, the multi-parameter inversion technique is adopted using the pressure data obtained from the model scale experiment and pressure field replicas calculated by boundary element method. The inversion results show that the proposed source model is appropriate in modeling non-cavitating propeller noise. The result of this study can be utilized in the prediction of propeller non-cavitating noise and hull excitation at various stages in design and analysis.
Non-cavitating propeller noise modeling and inversion
Journal of Sound and Vibration ; 333 , 24 ; 6424-6437
2014
14 Seiten, 24 Quellen
Aufsatz (Zeitschrift)
Englisch
Non-cavitating propeller noise modeling and inversion
Online Contents | 2014
|PREDICTION OF NON-CAVITATING UNDERWATER PROPELLER NOISE
Online Contents | 2002
|Numerical study of non-cavitating underwater propeller noise
Online Contents | 2004
|Pressure and noise induced by cavitating marine screw propeller
TIBKAT | 1992
|