Ocean energy systemswave energy modelling task: Modelling, verification and validation ofwave energy converters
Journal article, 2019

The International Energy Agency Technology Collaboration Programme for Ocean Energy Systems (OES) initiated the OES Wave Energy Conversion Modelling Task, which focused on the verification and validation of numerical models for simulating wave energy converters (WECs). The long-term goal is to assess the accuracy of and establish confidence in the use of numerical models used in design as well as power performance assessment of WECs. To establish this confidence, the authors used different existing computational modelling tools to simulate given tasks to identify uncertainties related to simulation methodologies: (i) linear potential flow methods; (ii) weakly nonlinear Froude-Krylov methods; and (iii) fully nonlinear methods (fully nonlinear potential flow and Navier-Stokes models). This article summarizes the code-to-code task and code-to-experiment task that have been performed so far in this project, with a focus on investigating the impact of different levels of nonlinearities in the numerical models. Two different WECs were studied and simulated. The first was a heaving semi-submerged sphere, where free-decay tests and both regular and irregular wave cases were investigated in a code-to-code comparison. The second case was a heaving float corresponding to a physical model tested in a wave tank. We considered radiation, diffraction, and regular wave cases and compared quantities, such as the WEC motion, power output and hydrodynamic loading.

Simulation

Wave energy

Computational fluid dynamics

Numerical modelling

Boundary element method

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Published in

Journal of Marine Science and Engineering

20771312 (eISSN)

Vol. 7Issue 11 art. no 379

Research Project(s)

IEA OES Task 10 - Wave Energy Modeling Verifications and Validation

Swedish Energy Agency (44423-1), 2017-05-16 -- 2019-06-30.

Categorizing

Subject Categories

Applied Mechanics

Vehicle Engineering

Fluid Mechanics and Acoustics

Identifiers

DOI

10.3390/jmse7110379

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Latest update

2/1/2022 1