Underwater noise has been recently identified as a harmful form of pollution to marine life and ecosystems and is receiving increasing attention from scientists, policy makers and the public. A procedure able to evaluate underwater noise generated by propeller and ship hull can be a valuable tool for estimating the environmental impact of the ship. In this issue a methodology for the prediction of propellers excitation and associated ship response is presented. Empirical and numerical approaches have been coupled for the characterisation of the propeller and the determination of the radiated acoustic field respectively and a coupled BEM/FEM analysis of the whole ship has been carried out by means of the commercial code LMS SYSNOISE®. The research activity is developed in cooperation with CETENA.
Approccio accoppiato empirico/numerico per la previsione del rumore irradiato in acqua da elica e carena
SALIO, MARIA PAOLA;VIVIANI, MICHELE;CARRERA, GIOVANNI
2009
Abstract
Underwater noise has been recently identified as a harmful form of pollution to marine life and ecosystems and is receiving increasing attention from scientists, policy makers and the public. A procedure able to evaluate underwater noise generated by propeller and ship hull can be a valuable tool for estimating the environmental impact of the ship. In this issue a methodology for the prediction of propellers excitation and associated ship response is presented. Empirical and numerical approaches have been coupled for the characterisation of the propeller and the determination of the radiated acoustic field respectively and a coupled BEM/FEM analysis of the whole ship has been carried out by means of the commercial code LMS SYSNOISE®. The research activity is developed in cooperation with CETENA.
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