TERAWATT - a collaborative research project funded under ...TERAWATT ~ EPSRC GRAND CHALLENGE FUNDING...

SuperGen UK Centre for Marine Energy Research Annual Assembly 2012

TERAWATT - a collaborative research projectfunded under the EPSRC Grand Challenge

Jonathan Side

UKCMER

TERAWATT ~ EPSRC GRAND CHALLENGE FUNDING

TeraWatt: An Introduction and Overview

Multi-institution EPSRC research project established under

the Marine Alliance for Science and Technology Scotland (MASTS), involving the Universities of

• Heriot-Watt,

• Edinburgh,

• Highlands and Islands (LCC and SAMS),

• Glasgow (now Swansea),

• Strathclyde

• and with Marine Scotland Science as full consortium partners.

Regular reporting though a Steering Group and UKCMER

UKCMER

http://www.swan.ac.uk/


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.

UKCMER



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

UKCMER



Seabed bathymetry - National Geophysical Data Center (ETOPO1, GEBCO_08 Grid — global grid at 30 arc-second intervals)

Workstream 2

Illustration of the use of Mike by DHI for wave modelling


Wind input – ECMWF, NCEP/NCAR Reanalysis (6hr intervals) Workstream 2


Use of wind data for 1st

March to 30th

March 2012

Workstream 2


Use of wind data for hindcasting period ~ 1st

March to 30th

March 2012

5th March 2012, 04:00:00 am


Modelled significant wave height

Workstream 2



March to 30th

March 2012

6th March 2012, 05:00:00 am


Modelled significant wave height

7th March 2012, 06:00:00 am


Modelled significant wave height Workstream 2



March to 30th

March 2012

8th March 2012, 07:00:00 am





March to 30th

March 2012

10th March 2012, 09:00:00 am





March to 30th

March 2012

Cefas Buoy: Sign. Wave Height [m]Sig Wave Ht [m]

nput

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00:002012-03-02

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2

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Significant wave height – Model Validationwith CEFAS Buoy @ 57°17'.52N and 07°54'.84Win 103m of water

Cefas Buoy: Wave Period, T02 [sec]Tz [sec]

nput

s\H

ebrid

ean_

final

_Ope

ratio

nalD

ata.

sw -

Res

ult F

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deg_

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l.dfs

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rides

\wav

eda

ta\C

efas

Buo

y\M

arch

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\Cef

asM

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2012

.dfs

0

00:002012-03-02

00:0003-07

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6.0

7.0

8.0

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13.0


Zero Crossing Period – Model Validationwith CEFAS Buoy @ 57°17'.52N and 07°54'.84Win 103m of water


Future work in Workstream 2 with Mike by DHI: Use of wave model output for combined wave and tidal model

Wave model Tidal model


Workstream 2Illustration of the use of Deltares Delft3D

Boundary Conditions:

TPXO 7.2 Global Inverse Tide Model

The tides are provided as complex amplitudes of earth-relative sea-surface elevation for eight primary (M2, S2, N2, K2, K1, O1, P1, Q1), two long period (Mf,Mm) and 3 non-linear (M4, MS4, MN4) harmonic constituents, on a 1440x721, 1/4 degree resolution full global grid

Present Grid Resolution and Bathymetry


UKCMER


Water level Model Validation against Tide Gauge Data (Wick)UKCMER

TERAWATT - a collaborative research project funded under ...TERAWATT ~ EPSRC GRAND CHALLENGE FUNDING...

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