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Design and analysis of a pumpjet propulsor for a ferry ship
Citation Link: https://doi.org/10.15480/882.9355
Publikationstyp
Conference Paper
Date Issued
2024-04-04
Sprache
English
Author(s)
Università degli Studi di Genova Scuola Politecnica, Genova, Liguria, Italia
Università degli Studi di Genova, Genova, Liguria, Italia
CETENA S.p.A., Via Ippolito d’Aste 5, 16121 Genoa, Italy
CETENA S.p.A., Via Ippolito d’Aste 5, 16121 Genoa, Italy
National Research Council of Italy, Institute of Marine Engineering (CNR-INM), Rome, Italy
BC Ferries, Victoria, British Columbia, Canada
TORE-DOI
Start Page
107
End Page
116
Citation
8th International Symposium on Marine Propulsors (smp 2024)
Contribution to Conference
Publisher
Norwegian University of Science and Technology, Department of Marine Technology
ISSN
2414-6129
ISBN
978-82-691120-5-4
Peer Reviewed
true
The high efficiency of pumpjet propulsors recently favored their application to ships, different to usual high-speed vessels and submarines, to comply with the most recent regulations on efficiency, comfort onboard and noise pollution. In this context, as a part of the activity of the EU funded project SATURN, the design, and the performances of an axial pumpjet are investigated. The pumpjet of current study is designed to replace a conventional propeller of a ferry ship. To this aim a simulation-based design optimization method employing simplified RANSE analyses, synthetic wakes generated using body force distributions and a mixing-plane based coupling between rotor and stator is employed. Main geometrical characteristics (diameter, number of rotor and stator blades) as well as distributions of pitch, chord and camber are handled in the process by a parametric description of the geometry. A genetic algorithm guides towards the Pareto convergence of the designs by requiring the maximization of the propulsive efficiency at the lowest possible cavitation inception index. Fully unsteady RANSE calculations are finally employed to characterize the unsteady performances (thrust and torque) in behind conditions including the cavitation pattern and the induced pressure pulses on the ship stern, and results are discussed and compared to those of the reference conventional propeller.
Subjects
Pumpjet propulsors
Optimization
Unconventional propellers
RANSE
DDC Class
620: Engineering
Publication version
publishedVersion
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Name
Gaggero-DesignAndAnalysisOfAPumpjetPropulsorForAFerryShip-1180-1-final.pdf
Type
Main Article
Size
18.09 MB
Format
Adobe PDF