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PerAWaT - Implementation of Wave Energy Converters in Spectral Wave Models (WG1 WP2 D2)


Citation Queen’s University Belfast PerAWaT - Implementation of Wave Energy Converters in Spectral Wave Models (WG1 WP2 D2), ETI, 2011. https://doi.org/10.5286/UKERC.EDC.000404.
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Author(s) Queen’s University Belfast
Project partner(s) Queen’s University Belfast
Publisher ETI
DOI https://doi.org/10.5286/UKERC.EDC.000404
Download MRN_MA1003_13.pdf document type
Abstract The Performance Assessment of Wave and Tidal Array Systems (PerAWaT) project, launched in October 2009 with £8m of ETI investment. The project delivered validated, commercial software tools capable of significantly reducing the levels of uncertainty associated with predicting the energy yield of major wave and tidal stream energy arrays. It also produced information that will help reduce commercial risk of future large scale wave and tidal array developments.

This document addresses the practical aspects of the implementation of a wave energy converter representation in a third generation spectral wave model.
  • Section 1: Introduction
    • Scope of the document and the relationship of this document to other deliverables.
    • Summary of the closely related deliverable WG1 WP2 D1, which describes the physical representation of wave energy converters in a thirdgeneration spectral wave model, is provided,
    • Acceptance criteria for this deliverable
  • Section 2: Overview of development strategy
    • Methods for achieving the key desirable characteristics of the new software (flexibility, user-friendliness, and reliability)
    • How the software modification will be carried out on four separate key elements successively, and then the integration of these elements that will provide the final software tool. Key elements:
    • representation of a wave energy converter,
    • location of the wave energy converters,
    • input of wave energy converter parameters,
    • output of wave energy converter power capture.
    • The software development tools which will be used for the project are described and the reason for the specific tool choice is explained.
    • The Microsoft VisualStudio program will be used for interactive development of the code, and the Git source code management (or revisioning) software will be used to manage changes to the code.
  • Section 3: Selection of spectral wave model
    • Two open source models, SWAN andTOMAWAC, are identified as good candidates and a close comparison of the two models is carried out.
    • The comparison includes an assessment of the physical processes represented in the models and their ease of use and modification.
    • Two test cases are implemented in both models to aid in the comparison.
    • Although the models solve the same equation in a totally different way, it is shown that the results are very similar, and that neither model can be eliminated as a potential candidate based on physical process representation.
    • The final model choice is TOMAWAC, because it was developed at EDF which is associated withthe PerAWaT project and support for interpretation of the source code is more readily available.
    • However, both models were deemed suitable for the task, and therefore should there be an unforeseen problem with TOMAWAC, it would be possible to proceed with SWAN.
  • Section 4: Core elements of software tool
    • Describe seach of the four core elements in detail, and outlines the development process for each of them.
    • New subroutines, and existing subroutines and variables which require modification are identified.
    • Additionally, for each core element the method for verification that the added code is working correctly is described.
  • Section 5: Validation of the SpecWec tool
    • Validation of the representation of wave energy converters in a spectral wave model.
    • Two key parameters which will be addressed during the validation process are identified as wave energy converter density, and wave energy converter performance.
    • Because there is no wave farm data available for the validation process, the spectral representation of wave energy converters will be compared with both the time-domain model WaveFarmer being developed at Garrad Hassan, and the wave tank experimental data which is due to be carried out at Queen’s University Belfast as part of the PerAWaT project.
Associated Project(s) ETI-MA1003: Performance Assessment of Wave and Tidal Array Systems (PerAWaT)
Associated Dataset(s) EDC0000134: Tidal Energy Site Environmental Conditions Measured During the ReDAPT Tidal Project 2011-2014
Associated Publication(s)

ETI Insights Report - Wave Energy

PerAWaT - An Investigation into the effect of Ambient Turbulence Levels on the Wakes of a Conventional Low-Solidity and an Open-Centre High-Solidity Tidal Current Turbine (WG3 WP5 D4)

PerAWaT - A Parameterization of the end-of-Near-Wake Region for a Conventional Low Solidity and an Open-Centre High-Solidity Tidal Current Turbine (WG3 WP5 D3)

PerAWaT - Array Scale Experimental Test Report (WG4 WP2 D5)

PerAWaT - Array Scale Experiment Specification (WG4 WP2 D1)

PerAWaT - Calibration Report for Scale Model Experiments (WG4 WP2 D4)

PerAWaT - Choice of Numerical Model (WG3 WP6 D1)

PerAWaT - Code Development in TELEMAC2D and TELEMAC3D in order to allow for the implementation of Parametric Characterization of Arrays (WG3 WP3 D2)

PerAWaT - Comparison with EDF (WG3 WP6 D6)

PerAWaT - Consent Licence for Installation of 1:10th Scale Tidal Turbines in Strangford Lough, Northern Ireland (WG4 WP5 D1)

PerAWaT - Design and Characterisation of Array Emulators (WG4 WP4 D2)

PerAWaT - Design and Specification of Ducted Disc Experiments (WG4 WP3 D1)

PerAWaT - Design and Testing Specification (WG4 WP4 D1)

PerAWaT - Design of Equipment for Scale Model Experiments (WG4 WP2 D2)

PerAWaT - Development of a Computational Fluid Dynamics Mesoscale Tidal Channel Model

PerAWaT - Development of a Computational Fluid Dynamics Model for a Horizontal Axis Tidal Current Turbine WG3 WP5 D1)

PerAWaT - Development of a Computational Fluid Dynamics Model for an Open-Centre Tidal Current Turbine (WG3 WP5 D2)

PerAWaT - Development of Free Surface Wave Model for an Axial Flow Tidal Turbine

PerAWaT - DIA Methodology Report

PerAWaT - Experimental and Computation Investigations into Ducted Porous Discs and Rotors at Low Blockage (WG4 WP3 D3)

PerAWaT - Experiment Data, Quality Controlled and Delivered (WG4 WP3 D2)

PerAWaT - Final Summary Report

PerAWaT - GH Blockage Modelling Report (WG3 WP4 D1)

PerAWaT - GH Device Scale Modelling Report

PerAWaT - GH Far Wake Modelling Report (WG3 WP4 D5)

PerAWaT - GH Inter-Array Scale Modelling Report (WG3 WP4 D6)

PerAWaT - GH Near Wake Modelling Report (WG3 WP4 D2)

PerAWaT - Identification of Test Requirements and Physical Model Design (WG4 WP1 D1)

PerAWaT - Implementation Report: Frequency-Domain Model (WG1 WP1 D2)

PerAWaT - Implementation Report: Time-Domain Model (WG1 WP1 D3)

PerAWaT - Influence of Free Surface Waves on the Performance and Wake Structure of a Ducted Horizontal Axis Tidal Turbine (WG3 WP1 D7)

PerAWaT - Influence of Free Surface Waves on the Performance and Wake Structure of a Horizontal Axis Tidal Turbine

PerAWaT - Large Array Testing

PerAWaT - Methodology and site case analysis for the SpecWEC modelling tool

PerAWaT - Methodology Report (WG1 WP1 D1B)

PerAWaT - Non-Linear Model Description Report (WG1 WP1 D7)

PerAWaT - Numerical Modelling of Tidal Turbine Arrays Involving Interactions within an Array: Development of the Level-Set Free Surface Model

PerAWaT - Numerical Modelling of Tidal Turbine Arrays Involving Interactions within an Array: Implementation of the Zero Tangential Shear Condition

PerAWaT - Performance and Wake Structure of a Full-Scale Horizontal Axis Axial Flow Turbine

PerAWaT - Performance and Wake Structure of a Model Horizontal Axis Axial Flow Turbine

PerAWaT - Rationalised Flow Field Modelling Report (WG3 WP4 D4)

PerAWaT - Regional Scale Plug-In Protocol (WG3 WP4 D10)

PerAWaT - Report of Calibrated Numerical Models of Anglesey and the Bristol Channel, including Validation Against Measured Data (WG3 WP6 D4B)

PerAWaT- Report of Calibrated Numerical Models of Pentland Firth, including Validation Against Measured Data (WG3 WP6 D4A )

PerAWaT - Report on Assessment of the Impact of Energy Extraction for the Horizontal Axis Tidal Turbine on Large Scale Tidal Characteristics at Example UK Sites (WG3 WP6 D8)

PerAWaT - Report on Characterisation and Assessment of the Availability of Resource at Example UK Sites (WG3 WP6 D7)

PerAWaT - Report on Comparisons of Nonlinear Models with Experimental Data for both Single Devices and Arrays of Devices (WG1 WP1 D1)

PerAWaT - Report on Model Setup for Ducted Horizontal-Axis Axial Flow Turbines

PerAWaT - Report on Model Setup for Horizontal Axis Axial Flow Turbines (WG3 WP1 D1)

PerAWaT - Report on Nonlinear Analysis of a Single Controlled Device in Irregular Seas (WG1 WP1 D11), AND Report on Nonlinear Analysis of Controlled Arrays in Irregular Seas (WG1 WP1 D12)

PerAWaT - Report on Non-Linear Analysis of Single and Arrays of Free Floating Devices (WG1 WP1 D9)

PerAWaT - Report on Responses and Power Take-Off from Controlled Devices in Regular Waves (WG1 WP1 D10)

PerAWaT - Report on the Inclusion of FDC Tidal Arrays into DG-ADCIRC Model (WG3 WP6 D5)

PerAWaT - Representation of Wave Energy Converters in Spectral Wave Models (WG1 WP2 D1)

PerAWaT - Scientific Report for the SpecWEC Modelling Tool - Part 1

PerAWaT - Selection of Appropriate Example Sites and Acquisition of Necessary Data to define Site Characteristics (WG3 WP6 D3)

PerAWaT - SpecWec Beta Version Release

PerAWaT - Test Schedule and Test System Design of 1:10th Scale Tidal Turbines in Strangford Lough, Northern Ireland (WG4 WP5 D2)

PerAWaT - Tidal Array Scale Numerical Modelling Interactions within a Farm (Steady Flow) WG3 WP2 D5a

PerAWaT - Tidal Array Scale Numerical Modelling: Interactions within a Farm (Unsteady Flow) WG3 WP2 D5b

PerAWaT - Tidal Array Scale Numerical Modelling: Level Set Technique Implementation within Code Saturne, Validation of the Combined Implementation (Flow Solver)

PerAWaT - Tidal Basin Modelling: the Alderney Race, the Pentland Firth and the Paimpol-Bréhat Sites Modelled in Telemac Software WG3 WP3 D1

PerAWaT- Tidal Coastal Basin Numerical Modelling: Large Scale Effects of Tidal Energy Extraction (WG3 WP3 D4)

PerAWaT - Tidalfarmer Interim Model Validation Report (WG3 WP4 D18)

PerAWaT - Tidalfarmer Model Validation And Uncertainties (WG3 WP4 D19)

PerAWaT - Tidal Farm Modelling: the Alderney Race, the Pentland Firth and the Paimpol-Bréhat Sites Modelled in Telemac Software (WG3 WP3 D3)

PerAWaT - User Report for the SpecWEC Modelling Tool - Part 2

PerAWaT - Validation and Verification of the SpecWEC Numerical Modeling Tool

PerAWaT - Verification of Code (WG3 WP6 D2)

PerAWaT - Weakly-Nonlinear Hydrodynamics of Freely Floating WECS (WG1 WP1 D8)