MIGLIANTI F.

Ships underwater radiated noise is a subject of great and increasing interest in naval architecture because of its impacts on the environment and on the on-board comfort. Among the different noise sources, the propeller is usually the dominant one, especially when it cavitates. For this reason a lot of efforts have been spent in studying the...

Model scale experiments are currently considered the stateof-the-art approach for studying cavitation noise and predict the acoustical performance of a cavitating propeller. Unfortunately, this approach requires time-consuming tests in a cavitation tunnel with a model of the propeller and the experiments are usually affected by scale effects....

Experimental tests in model-scale are the currently established (and more reliable) methods for the propeller acoustic characterization. However, they are affected by uncertainties mostly due to scale effects, which make it difficult to consistently reproduce in model-scale some of full-scale functioning conditions. In order to cope with this...

Propeller noise, especially in the presence of cavitation, is usually the main contributor to the acoustic signature of ships. Due to this fact, considerable efforts have been devoted to the study of underwater radiated noise induced by propeller cavitation during years: firstly, for military reasons; more recently, for other reasons...

In many real world applications the physical knowledge of a phenomenon and data science can be combined together in order to get mutual benefits. As a result, it is possible to formulate a so-called hybrid model from the combination of the two approaches. In this work, we propose an hybrid approach for the prediction of the ship propeller...

Ship-induced acoustic noise can be treated as a measure of environmental impact of marine transportation industry, where, if present, cavitation is often the dominant noise source. Quantitative prediction of emitted noise levels requires detailed characterization of cavitation regimes associated with operation of marine propellers. We conducted...