FULL SCALE PREDICTION OF THE NOISE GENERATED BY THE TURBULENT BOUNDARY LAYER ON BOARD A HIGH SPEED VESSEL

With the increase of the ship speed, flow noise sources can be responsible for an amplification of the total noise level on board new generation of fast ships. In particular, the turbulent boundary layer (TBL) excitation, generally considered in the study of internal and external noise radiation problems of aircraft and underwater marine vehicles, is here analysed for fast surface ships. On the basis of some extensive hydrodynamic and structural experimental campaigns performed in a towing tank, on different fast marine vehicles, for high Reynolds number values, a numerical procedure for the prediction of the full scale vibro-acoustic response of a typical ship hull structure to the TBL pressure load is presented.