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This research has been co-funded by the European Union (ERC, coustics, project number 101086075) . Views and opinions expressedare however those of the author (s) only and do not necessarily flect those of the European Union or the European Research Council. Neither the European Union nor the granting authority held responsible for them. Author Esteban Ferrer would also thank the support of Agencia Estatal de Investigacion, Spain grant "Europa Excelencia"for the project EUR2022-134041 MCIN/AEI/10.13039/501100011033 y the European Union erationEU/PRTR. Author Adrian Portillo Juan has received support from Universidad Politecnica de Madrid, Spain. He eficiary of one of the Pre-doctoral contracts of the own UPM program.r are however those of the author (s) only and do not necessarily flect those of the European Union or the European Research cil. Neither the European Union nor the granting authority held responsible for them. Author Esteban Ferrer would also thank the support of Agencia Estatal de Investigacion, Spain grant "Europa Excelencia"for the project EUR2022-134041 MCIN/AEI/10.13039/501100011033 y the European Union erationEU/PRTR. Author Adrian Portillo Juan has received support from Universidad Politecnica de Madrid, Spain. He eficiary of one of the Pre-doctoral contracts of the own UPM program.

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Hydro-acoustic optimization of propellers: A review of design methods

Publicat a:Applied Ocean Research. 151 104158- - 2024-10-01 151(), DOI: 10.1016/j.apor.2024.104158

Autors: Portillo-Juan, Adrian; Saettone, Simone; Andersen, Poul; Ferrer, Esteban

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In recent years, the escalation of anthropogenic noise within marine environments has become a pressing ecological concern. Despite the proliferation of guidelines aimed at mitigating this issue, their adoption remains non-compulsory. The International Maritime Organization (IMO) advocates for noise reduction through the refinement of propeller design and heightened research to curtail acoustic emissions, ensuring that such measures do not compromise propulsive efficiency. This review delves into the array of strategies devised to attenuate noise pollution. It scrutinizes the methodologies employed to evaluate the hydroacoustic attributes of propellers, including experimental and computational approaches. Furthermore, it summarizes the techniques employed in the multiobjective optimization of propellers, which involves balancing the maximization of efficiency against the minimization of noise emission. The findings highlight the necessity for a comprehensive, interdisciplinary approach to the hydroacoustic optimization of marine propellers, encompassing cavitation experiments and advanced numerical simulations. In the field of propeller optimization, the traditional reliance on genetic algorithms is giving way to the adoption of neural networks and surrogate models derived from computational fluid dynamics data, particularly when addressing complex, nonlinear phenomena such as hydro-acoustics and cavitation.

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