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Spectral element FNPF simulation of focused wave groups impacting a fixed FPSO-type body
DTU Technical University of Denmark, Denmark.
RISE - Research Institutes of Sweden, Safety and Transport, Safety.ORCID iD: 0000-0001-6934-634x
2019 (English)In: International Journal of Offshore and Polar Engineering, ISSN 1053-5381, Vol. 29, no 2, p. 141-148Article in journal (Refereed) Published
Abstract [en]

A 3D fully nonlinear potential flow (FNPF) model based on an Eulerian formulation is presented. The model is discretizedusing high-order prismatic – possibly curvilinear – elements using a spectral element method (SEM) that has support foradaptive unstructured meshes. The paper presents details of the FNPF-SEM development, and a model is illustrated toexhibit exponential convergence for steep stream function waves to serve as validation. The model is then applied to the caseof focused waves impacting on a surface-piercing, fixed FPSO-like structure. Good agreement is found between numericaland experimental wave elevations and pressures.

Place, publisher, year, edition, pages
International Society of Offshore and Polar Engineers , 2019. Vol. 29, no 2, p. 141-148
Keywords [en]
Focused wave, FPSO, Fully nonlinear potential flow, High-order numerical methods, Spectral element method, Unstructured meshes, Wave–body interaction, Floating production storage and offloading, Potential flow, Focused waves, High-order numerical method, Numerical methods
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-39659DOI: 10.17736/ijope.2019.jc753Scopus ID: 2-s2.0-85068934129OAI: oai:DiVA.org:ri-39659DiVA, id: diva2:1341033
Note

 Funding details: Energimyndigheten, 44432-1, 41125-1; Funding text 1: This work contributed to the activities in the research project Multi-fidelity Decision making tools for Wave Energy Systems (MIDWEST), which is supported by the OCEAN-ERANET program. Claes Eskilsson is supported by the Swedish Energy Agency through grants 41125-1 and 44432-1. The DTU Computing Center (DCC) supported the work with access to computing resources. The experimental data used are provided by the CCP-WSI project through the website at http://www.ccp-wsi.ac.uk.

Available from: 2019-08-07 Created: 2019-08-07 Last updated: 2019-08-07Bibliographically approved

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