Abstract
Numerical models based on potential flow theory, including different types of nonlinearities are compared and validated against experimental data for the Wavestar wave energy converter technology. Exact resolution of the rotational motion, non-linear hydrostatic and Froude-Krylov forces as well as a model based on non-linear potential flow theory and weakscatterer hypothesis are successively considered. Simple tests, such as dip tests, decay tests and captive tests enable to highlight the improvements obtained with the introduction of nonlinearities. Float motion under wave actions and without control action, limited to small amplitude motion with a single float, is well predicted by the numerical models, including the linear one. Still, float velocity is better predicted by accounting for non-linear hydrostatic and Froude-Krylov forces.
| Original language | English |
|---|---|
| Title of host publication | 12th EWTEC - Proceedings of the 12th European Wave and Tidal Energy Conference : 27th Aug -1st Sept 2017, Cork, Ireland |
| Number of pages | 10 |
| Publisher | Technical Committee of the European Wave and Tidal Energy Conference |
| Publication date | 2017 |
| Article number | 646 |
| Publication status | Published - 2017 |
| Event | 12th European Wave and Tidal Energy Conferenc - Cork, Ireland Duration: 27 Aug 2017 → 1 Sept 2017 Conference number: 12 |
Conference
| Conference | 12th European Wave and Tidal Energy Conferenc |
|---|---|
| Number | 12 |
| Country/Territory | Ireland |
| City | Cork |
| Period | 27/08/2017 → 01/09/2017 |
| Series | European Wave and Tidal Energy Conference Series |
|---|---|
| Number | 2017 |
| Volume | 12 |
Keywords
- Wave energy
- Potential flow theory
- Nonlinear hydrostatics
- Nonlinear Froude Krylov forces
- Weak-scatterer