Prediction of the Hydrodynamic Noise of one Certain Frigate

In this paper, the prediction for the hydrodynamic noise of one certain frigate at the speed of 16Kn is made. The hydrodynamic noise is divided into the flow-induced noise and the noise from the flow-induced vibration to study separately. Firstly, the numerical simulation for the flow-induced noise is conducted by the Finite Element Method (FEM) and the Boundary Element Method (BEM), and the flow noise distribution characteristics in steady state are analyzed from the horizontal and vertical direction. Then, the noise from the flow-induced vibration is studied using the Statistical Energy Analysis (SEA). Finally, the complete hydrodynamic noise of the frigate is acquired by the stacking of the two results, which can be used to evaluate whether the design meets the requirements. The study of this paper can provide the reference for the prediction of the hydrodynamic noise and the further noise reduction to a degree.