Midfidelity model verification for a point-absorbing wave energy converter with linear power take-off
In the preliminary design stage of a wave energy converter (WEC), researchers need fast and reliable simulation tools. High-fidelity numerical models are usu- ally employed to study the wave-structure interaction, but the computational cost is demanding. As an alternative, midfidelity models can prov...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
European Wave and Tidal Energy Conference
2022-06-01
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| Series: | International Marine Energy Journal |
| Subjects: | |
| Online Access: | http://marineenergyjournal.org/imej/article/view/102 |
| _version_ | 1818248594536267776 |
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| author | Eirini Katsidoniotaki Yi-Hsiang Yu Malin Göteman |
| author_facet | Eirini Katsidoniotaki Yi-Hsiang Yu Malin Göteman |
| author_sort | Eirini Katsidoniotaki |
| collection | DOAJ |
| description |
In the preliminary design stage of a wave
energy converter (WEC), researchers need fast and reliable
simulation tools. High-fidelity numerical models are usu-
ally employed to study the wave-structure interaction, but
the computational cost is demanding. As an alternative,
midfidelity models can provide simulations in the order of
real time. In this study, we operate Uppsala University’s
WEC in a relatively mild sea state and model it using
WEC-Sim. The model is verified based on OpenFOAM
simulations. To analyze the ability of the midfidelity
model to capture WEC dynamics, we investigate the system
separately with 1, 2, and 3 degrees of freedom. We examine
the contribution of viscous phenomena, and study both
linear and weakly nonlinear solutions provided by WEC-
Sim. Our results indicate that the viscous effects can be
neglected in heave and surge motion, but not for pitch.
We also find that the weakly nonlinear WEC-Sim solution
successfully agrees with the computational fluid dynam-
ics, whereas the linear solution could suggest misleading
results.
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| first_indexed | 2024-12-12T15:23:05Z |
| format | Article |
| id | doaj.art-6a75f56c8ec74a9b924a6435faa15f3c |
| institution | Directory Open Access Journal |
| issn | 2631-5548 |
| language | English |
| last_indexed | 2024-12-12T15:23:05Z |
| publishDate | 2022-06-01 |
| publisher | European Wave and Tidal Energy Conference |
| record_format | Article |
| series | International Marine Energy Journal |
| spelling | doaj.art-6a75f56c8ec74a9b924a6435faa15f3c2022-12-22T00:20:20ZengEuropean Wave and Tidal Energy ConferenceInternational Marine Energy Journal2631-55482022-06-015110.36688/imej.5.67-75Midfidelity model verification for a point-absorbing wave energy converter with linear power take-offEirini Katsidoniotaki0Yi-Hsiang YuMalin GötemanUppsala University In the preliminary design stage of a wave energy converter (WEC), researchers need fast and reliable simulation tools. High-fidelity numerical models are usu- ally employed to study the wave-structure interaction, but the computational cost is demanding. As an alternative, midfidelity models can provide simulations in the order of real time. In this study, we operate Uppsala University’s WEC in a relatively mild sea state and model it using WEC-Sim. The model is verified based on OpenFOAM simulations. To analyze the ability of the midfidelity model to capture WEC dynamics, we investigate the system separately with 1, 2, and 3 degrees of freedom. We examine the contribution of viscous phenomena, and study both linear and weakly nonlinear solutions provided by WEC- Sim. Our results indicate that the viscous effects can be neglected in heave and surge motion, but not for pitch. We also find that the weakly nonlinear WEC-Sim solution successfully agrees with the computational fluid dynam- ics, whereas the linear solution could suggest misleading results. http://marineenergyjournal.org/imej/article/view/102CFDhydrodynamic analysisnumerical simulationsoffshore renewablespoint-absorberverification |
| spellingShingle | Eirini Katsidoniotaki Yi-Hsiang Yu Malin Göteman Midfidelity model verification for a point-absorbing wave energy converter with linear power take-off International Marine Energy Journal CFD hydrodynamic analysis numerical simulations offshore renewables point-absorber verification |
| title | Midfidelity model verification for a point-absorbing wave energy converter with linear power take-off |
| title_full | Midfidelity model verification for a point-absorbing wave energy converter with linear power take-off |
| title_fullStr | Midfidelity model verification for a point-absorbing wave energy converter with linear power take-off |
| title_full_unstemmed | Midfidelity model verification for a point-absorbing wave energy converter with linear power take-off |
| title_short | Midfidelity model verification for a point-absorbing wave energy converter with linear power take-off |
| title_sort | midfidelity model verification for a point absorbing wave energy converter with linear power take off |
| topic | CFD hydrodynamic analysis numerical simulations offshore renewables point-absorber verification |
| url | http://marineenergyjournal.org/imej/article/view/102 |
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