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Speed and delivered power in waves — Predictions with CFD simulations at full scale
Chalmers University of Technology, Sweden; FLOWTECH International AB, Sweden.
FLOWTECH International AB, Sweden.
RISE Research Institutes of Sweden, Safety and Transport, Maritime department. (SSPA)ORCID iD: 0009-0009-0240-9268
RISE Research Institutes of Sweden, Safety and Transport, Maritime department. (SSPA)ORCID iD: 0000-0002-6266-2320
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2023 (English)In: Ocean Engineering, ISSN 0029-8018, E-ISSN 1873-5258, Vol. 285, article id 115289Article in journal (Refereed) Published
Abstract [en]

An efficient numerical method is proposed to estimate delivered power and speed loss for a ship in wind and waves. The added resistance in waves, obtained with an unsteady potential flow panel method, is added to the calm water resistance from a steady-state potential flow/RANS method coupled with a body force propeller model for self-propulsion. A comparison of numerical and experimental results is made for added resistance, calm water resistance and delivered power. A good agreement is obtained. As a practical application, the approach is used to calculate the weather factor, fw, of the Energy Efficiency Design Index (EEDI). The calculated weather factor is consistent with the values derived from full-scale measurements included in a database of similar ships. © 2023 The Author(s)

Place, publisher, year, edition, pages
Elsevier Ltd , 2023. Vol. 285, article id 115289
Keywords [en]
CFD, Delivered power, EEDI, Full-scale, Seakeeping, Self-propulsion, Speed loss, validation, Weather factor, Computational fluid dynamics, Numerical methods, Ship propulsion, Ships, Added resistances, Design index, Energy efficiency design index, Power, Weather factors, estimation method, model validation, ship handling, steady-state equilibrium, wave-structure interaction, wind-wave interaction, Energy efficiency
National Category
Environmental Engineering
Identifiers
URN: urn:nbn:se:ri:diva-65703DOI: 10.1016/j.oceaneng.2023.115289Scopus ID: 2-s2.0-85164663571OAI: oai:DiVA.org:ri-65703DiVA, id: diva2:1786538
Note

The authors would like to thank: Energimyndigheten, Sweden (Swedish Energy Agency, project 49300-1) for the financial support and SSPA AB for providing highly valuable validation data.

Available from: 2023-08-09 Created: 2023-08-09 Last updated: 2023-12-04Bibliographically approved

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Kjellberg, MartinWerner, Sofia

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