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Investigation of ship responses in regular head waves through a Fully Nonlinear Potential Flow approach
Chalmers University of Technology, Sweden.
Chalmers University of Technology, Sweden.
RISE Research Institutes of Sweden, Safety and Transport, Maritime department. (SSPA)ORCID iD: 0009-0009-0240-9268
Chalmers University of Technology, Sweden.
2022 (English)In: Ocean Engineering, ISSN 0029-8018, E-ISSN 1873-5258, Vol. 246, article id 110410Article in journal (Refereed) Published
Abstract [en]

In this study, the hydrodynamic performance of a ship in terms of motions and resistance responses in calm water and in regular head waves is investigated for two loading conditions using a Fully Nonlinear Potential Flow (FNPF) panel method. The main focus is understanding the ship responses in a broad range of operational conditions. Comprehensive analyses of the motions and their correlation with the wave making resistance including their harmonics in waves are presented and compared against experimental data. The predicted motions compare well with experimental data but the resistance prediction is not quite as good. The natural frequencies for heave and pitch are estimated from a set of free decay motion simulations in calm water to provide a better insight into the ship behavior near resonance conditions in waves. Interestingly, in addition to the well known peak in the added wave resistance coefficient around wave lengths close to one ship length, a secondary peak is detected in the vicinity of wave lengths with half the ship length. © 2022 The Authors

Place, publisher, year, edition, pages
Elsevier Ltd , 2022. Vol. 246, article id 110410
Keywords [en]
Added wave resistance, Free decay motion, Fully nonlinear Potential Flow, Regular head waves, Resistance, Ship motions, Decay motion, Free decay, Head waves, Regular head wave, Ship motion, Wave resistance, Ships, hydrodynamics, ocean wave, potential flow, resonance
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:ri:diva-59154DOI: 10.1016/j.oceaneng.2021.110410Scopus ID: 2-s2.0-85123422397OAI: oai:DiVA.org:ri-59154DiVA, id: diva2:1668360
Note

Funding details: Horizon 2020 Framework Programme, H2020, 636146; Funding details: Horizon 2020; Funding details: Trafikverket; Funding text 1: This research is funded by The Swedish Transport Administration through Lighthouse (Swedish Maritime Competence Center) as well as LeanShips project through the European Union’s Horizon 2020 research and innovation programme (Contract No.: 636146). The Maritime Research Institute Netherlands (MARIN) is acknowledged for providing the experimental data.; Funding text 2: This research is funded by The Swedish Transport Administration through Lighthouse (Swedish Maritime Competence Center) as well as LeanShips project through the European Union's Horizon 2020 research and innovation programme (Contract No.: 636146). The Maritime Research Institute Netherlands (MARIN) is acknowledged for providing the experimental data.

Available from: 2022-06-13 Created: 2022-06-13 Last updated: 2023-12-04Bibliographically approved

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Kjellberg, Martin

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