CIPOLLINI 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....

Shipping is responsible for approximately the 90% of world trade leading to significant impacts on the environment. As a consequence, a crucial issue for the maritime industry is to develop technologies able to increase the ship efficiency, by reducing fuel consumption and unnecessary maintenance operations. For example, the marine fouling...

Accurate energy consumption forecasting has become pivotal for many companies as a way to tailor the budget dedicated to energy purchase on their actual power demand, thus sustainably minimizing energy waste and expenses. For these companies, both short-term and long-term energy consumption forecasts are a matter of interest since they would...

In the latest years, models combining physical knowledge of a phenomenon and statistical inference are becoming of much interest in many real world applications. In this context, ship propeller underwater radiated noise is an interesting field of application for these so-called hybrid models, especially when the propeller cavitates. Nowadays,...

Fast diesel engine models for real-time prediction in dynamic conditions are required to predict engine performance parameters, to identify emerging failures early on and to establish trends in performance reduction. In order to address these issues, two main alternatives exist: one is to exploit the physical knowledge of the problem, the other...

Crash stop maneuvering performance is one of the key indicators of the vessel safety properties for a shipbuilding company. Many different factors affect these performances, from the vessel design to the environmental conditions, hence it is not trivial to assess them accurately during the preliminary design stages. Several first principal...

Reducing the noise impact of ships on the marine environment is one of the objectives of new propellers designs, since they represent the dominant source of underwater radiated noise, especially when cavitation occurs. Consequently, ship designers require new predictive tools able to verify the compliance with noise requirements and to compare...

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...