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TeraWatt Project


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A general overview of the TeraWatt project and wider context (MASTS, EcoWatt2050), followed by a description of the model domain, boundary conditions, calibration points, and so on (Arne Vögler - UHI).

MIKE by DHI 15th UK User Group Meeting - Tuesday 19 March 2013

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TeraWatt Project

  1. 1. TeraWatta collaborative research project funded under the EPSRC Grand Challenge Mike by DHI 15th UK User Group Meeting Lion Quays Waterside Resort, Shropshire Talk by Arne Vӧgler, CI
  2. 2. Overviewi. Introduction to MASTSii. The Contextiii. Introduction to TeraWatt, EcoWatt2050iv. Workstreamsv. The Model(s) Progress and Experiences so farvi. Next Steps
  3. 3. Marine Alliance for Science and Technology for Scotland - Overview• ~700 researchers across 10 key partner institutions• Initial investment from Scottish Funding Council and partners: £75m [2009-2016, £34m investments in new appointments and infrastructure]• Majority of new money – 34 staff – 48 studentships• Integration of science with policy and regulation• High level representation• Promotes and facilitates collaboration and co-operation - nationally and internationally• Drives scientific excellence in research and training• Provides critical mass
  4. 4. Example Array layoutinformation availablefrom EIA/licensingdocumentsExample documentsinclude:• Initial scoping reports Scoping & AM• Assessment methodology (AM) statements/report• Final Environmental Statements (ES) Scoping Scoping Scoping & ES Scoping
  5. 5. Challenges1. How do near field physical processes change post array development?2. What are the consequences of marine energy extraction on array scale to the benthic habitat?
  6. 6. TeraWattLarge scale InTERActive coupled 3D modelling for WAve and Tidal energy resource and environmental impacT 2012 – 2015Multi-institution EPSRC research project established under the Marine Alliancefor Science and Technology Scotland (MASTS), involving the Universities of o Heriot-Watt (ICIT Orkney Campus, PI Jon Side) o Edinburgh o Highlands and Islands (Lews Castle College and SAMS) o Strathclyde o Swansea o and with Marine Scotland Science as full consortium partners
  7. 7. TERAWATT seeks to answer and address:1) What is the best way to assess wave and tidal energy resources, and feedbacks on energy extraction, in certain geographical areas?2) What are the physical consequences of wave and tidal energy extraction?3) What are the ecological consequences of wave and tidal energy extraction?4) The development of standard hydrographic modelling methodologies for wave and tidal developments.Industry input led to the selection of Mike and Delft3D for modelling during formative discussions on the proposal.
  8. 8. EcoWatt 2050 Supplementary to TeraWatt To follow up on findings of TeraWatt on larger scale 2013 – 2016Multi-institution EPSRC research project established under the Marine Alliancefor Science and Technology Scotland (MASTS), involving the Universities of o Heriot-Watt (ICIT Orkney Campus, PI Jon Side) o Edinburgh o Highlands and Islands (Lews Castle College and SAMS) o Strathclyde o Swansea o Marine Scotland Science o National Oceanographic Centre o University of Aberdeen
  9. 9. EcoWatt 20501) How can marine planning be used to lay the foundation for the sustainable development of very large scale arrays of marine renewable energy devices?2) What criteria should be used to determine the ecological limits to marine renewable energy extraction, and what are the implications for very large scale array characteristics?3) How can we differentiate between the effects of climate change and of energy extraction on the marine ecosystem?4) Are there ways in which marine renewables development may ameliorate or exacerbate the predicted effects of climate change on marine ecosystems?
  10. 10. TERAWATT is structured in 4 workstreams:WORKSTREAM 1: The Research Questions, and Monitoring Progress towards Project Aims/Deliverables and the Methods Toolbox (lead Marine Scotland ~ Ian Davies)WORKSTREAM 2: Wave and tidal stream modelling (Lead Edinburgh University ~ Venki Venugopal)WORKSTREAM 3: Sediment Dynamics (Lead Strathclyde and Swansea ~ Mike Heath and Harshinie Karunathra)WORKSTREAM 4: Ecological Consequences of wave and tidal energy extraction (lead Heriot-Watt University and SAMS ~ Jon Side and Mike Burrows)Overseen by a Project Management Committee with a Steering Group with Workshop and Knowledge Exchange Events managed and co-ordinated by MASTS ~ Mark James
  11. 11. Seabed bathymetry - National Geophysical Data Center Workstream 2(ETOPO1, GEBCO_08 Grid — global grid at 30 arc-second Illustration ofintervals): Wind input – ECMWF, NCEP/NCAR Reanalysis the use of Mike(6hr intervals) by DHI for wave modelling
  12. 12. Modelled significant wave height Workstream 210th March 2012, 09:00:00 am Illustration of the use of Mike by DHI for wave modelling
  13. 13. Significant wave height – Model Validation with CEFAS Buoy @ 57°17.52N and 07°54.84W in 103m of water Cefas Buoy: Sign. Wave Height [m] Sig Wave Ht [m] D:Hebrideswave_dataCefas BuoyMarch 2012Cefas March 2012.dfs0 odel InputsHebridean_final_OperationalData.sw - Result FilesPoint_0_125deg_March2012_operational.dfs012111098765432 00:00 00:00 00:00 00:00 00:00 00:00 2012-03-02 03-07 03-12 03-17 03-22 03-27
  14. 14. Zero Crossing Period – Model Validation with CEFAS Buoy @ 57°17.52N and 07°54.84W in 103m of water Cefas Buoy: Wave Period, T02 [sec] Tz [sec] D:Hebrideswave_dataCefas BuoyMarch 2012Cefas March 2012.dfs0 lModel InputsHebridean_final_OperationalData.sw - Result FilesPoint_0_125deg_March2012_operational.dfs013. 9.0 8.0 7.0 6.0 00:00 00:00 00:00 00:00 00:00 00:00 2012-03-02 03-07 03-12 03-17 03-22 03-27
  15. 15. EVOLUTION OF DOMAIN• Version 1: 57N-60N; 1.5W-5.75W. The extended domain was considered for inclusion of Murray firth region and enough fetch on the south-east. However, the projection was wrong.• Version 2: 57.5N-60N; 1.5W-5.75W. The projection was corrected and domain was reduced to avoid unnecessary area on the down-right. The boundaries are inclined.• Version 3: 58N-60N; 1.5W-6W. The boundaries are considered inline with UTM coordinates and domain was further shortened to reduce no of elements.
  16. 16. DATABathymetry– GEBCO (global 30 arc-second grid) • Filtering out the landpoints– Marine Scotland Bathymetric Data for Pentland Firth, Orkney and Armadale region (*.xyz or ASCII format data can be used for MIKE) (resolution: ~2m) (this data has been interpolated to 10m resolution and used in the present case)
  17. 17. Validation (and other) data•Wick Tide Gauge – continuous data available•ADCP data Pentland Firth – one month model run•ADCP data Inner Sound – one month data available•Fall of Wareness ADCP data – one month data available•Hebridean Marine Energy Futures Wave buoy and ADCP data (North West Lewis) (1 year +)•CEFAS Wavenet buoy data (West of Hebrides wave buoy, 1 year +)•TCE WTKN (Wave and Tidal Knowledge network)•EMEC Wave buoy data (Billia Croo)•Beach Profiles – Bay of Skaill•BGS sediment data
  20. 20. Use of Delft 3D in addition to DHI Mike3/21
  21. 21. Future work in Workstream 2 with Mike by DHI: Use of wavemodel output for combined wave and tidal model Wave model Tidal model
  22. 22. WS3 - Stonehaven: sediment modelling
  23. 23. WS3 - Tidal model• Tidal model implemented for domain with astronomical tides (OTPS) as drivers around open boundary• Tidal data from Aberdeen and Leith available for validation (plus elevations from OTPS)• After initial spinup model matches data perfectly then goes badly wrong near minimum tidal range
  24. 24. WS3 - Bay of Skaill – Sediment modelling
  25. 25. Next steps• Complete set up of models in Mike3/21 and Delft 3d• Launch model runs (wave and tide); calibrate models against measured data• Validation of models• Integration of wave and tidal energy converters• Assess relevant changes to key parameters (e.g. radiation stress, velocities, Hs, Tz, …)• Provide boundary conditions to sediment modelling studies• Initiate Sediment model runs (suspended and bed)• Assess impact of change to physical processes to benthic habitat (follow statistical procedures)• Disseminate findings
  26. 26. Thank you!Many thanks to Jon Side, Venki Venugopal, Chris McCaig, Rory O’Hara Murray,Susanna Baston and MASTS for providing slides for this presentation.