Irregular wave validation of a coupling methodology for numerical modelling of near and far field effects of wave energy converter arrays
| Autor: | Vasiliki Stratigaki, Peter Troch, Gael Verao Fernandez |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Control and Optimization
Technology and Engineering Field (physics) Wave propagation wave-structure interaction IMPACT 020209 energy near field Energy Engineering and Power Technology Near and far field wave propagation 02 engineering and technology 010501 environmental sciences lcsh:Technology 01 natural sciences numerical modeling numerical coupling MILDwave wave–structure interaction far field experimental validation WECwakes project wave energy converter arrays 0202 electrical engineering electronic engineering information engineering Sensitivity (control systems) Electrical and Electronic Engineering Engineering (miscellaneous) Boundary element method 0105 earth and related environmental sciences Physics Coupling lcsh:T Renewable Energy Sustainability and the Environment Mathematical analysis Solver SENSITIVITY Energy (signal processing) Energy (miscellaneous) |
| Zdroj: | ENERGIES Energies, Vol 12, Iss 3, p 538 (2019) Energies; Volume 12; Issue 3; Pages: 538 |
| ISSN: | 1996-1073 |
| Popis: | Between the Wave Energy Converters (WECs) of a farm, hydrodynamic interactions occur and have an impact on the surrounding wave field, both close to the WECs (“near field„ effects) and at large distances from their location (“far field„ effects). To simulate this “far field„ impact in a fast and accurate way, a generic coupling methodology between hydrodynamic models has been developed by the Coastal Engineering Research Group of Ghent University in Belgium. This coupling methodology has been widely used for regular waves. However, it has not been developed yet for realistic irregular sea states. The objective of this paper is to present a validation of the novel coupling methodology for the test case of irregular waves, which is demonstrated here for coupling between the mild slope wave propagation model, MILDwave, and the ‘Boundary Element Method’-based wave⁻structure interaction solver, NEMOH. MILDwave is used to model WEC farm “far field„ effects, while NEMOH is used to model “near field„ effects. The results of the MILDwave-NEMOH coupled model are validated against numerical results from NEMOH, and against the WECwakes experimental data for a single WEC, and for WEC arrays of five and nine WECs. Root Mean Square Error (RMSE) between disturbance coefficient (Kd) values in the entire numerical domain ( R M S E K d , D ) are used for evaluating the performed validation. The R M S E K d , D between results from the MILDwave-NEMOH coupled model and NEMOH is lower than 2.0% for the performed test cases, and between the MILDwave-NEMOH coupled model and the WECwakes experimental data R M S E K d , D remains below 10%. Consequently, the efficiency is demonstrated of the coupling methodology validated here which is used to simulate WEC farm impact on the wave field under the action of irregular waves. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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