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Added resistance, heave and pitch for the KVLCC2 tanker using a fully nonlinear unsteady potential flow boundary element method
Chalmers University of Technology, Sweden.
RISE Research Institutes of Sweden, Safety and Transport, Maritime department. (SSPA)ORCID iD: 0009-0009-0240-9268
Flowtech International AB, Sweden.
Chalmers University of Technology, Sweden.
2021 (English)In: Ocean Engineering, ISSN 0029-8018, E-ISSN 1873-5258, Vol. 229, article id 108935Article in journal (Refereed) Published
Abstract [en]

In this paper, a fully nonlinear unsteady potential flow method is used to predict added resistance, heave and pitch for the KVLCC2 hull in regular head waves at design speed. The method presents a nonlinear decomposition of the velocity potential and the wave field and an adaptive grid refinement. A formulation for the acceleration potential is used to obtain the pressure. To improve computational efficiency, a Barnes-Hut algorithm is introduced. A grid dependency study and a study on the impact of different time steps on the solution are performed. Numerical results have been compared with experimental data for the design speed. A general good agreement is found for added resistance, especially for longer waves. Heave and pitch are properly computed for all wave lengths in the range λ/Lpp=0.4 to 1.4. © 2021 The Author(s)

Place, publisher, year, edition, pages
Elsevier Ltd , 2021. Vol. 229, article id 108935
Keywords [en]
Acceleration potential, Adaptive grid refinement, Fully nonlinear boundary element method, KVLCC2, Computational efficiency, Potential flow, Sailing vessels, Added resistances, Boundary-element methods, Design speed, Flow boundaries, Fully nonlinear, Head waves, Boundary element method, algorithm, unsteady flow, wave field
National Category
Marine Engineering
Identifiers
URN: urn:nbn:se:ri:diva-57268DOI: 10.1016/j.oceaneng.2021.108935Scopus ID: 2-s2.0-85105591328OAI: oai:DiVA.org:ri-57268DiVA, id: diva2:1620802
Note

Funding details: Chalmers Tekniska Högskola; Funding text 1: This research is funded by Chalmers University of Technology. The experimental results were provided by SSPA Sweden AB.; Funding text 2: This research is funded by Chalmers University of Technology . The experimental results were provided by SSPA Sweden AB.

Available from: 2021-12-16 Created: 2021-12-16 Last updated: 2023-12-04Bibliographically approved

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