U N I V E R S I T Y O F B E R G E N Geophysical Institute The NORCOWE legacy - data and instrumentation J. Reuder 1, M. Flügge 1,2, M. Bakhoday Pakyabi 1,3, B. Svardal 2 1 Geophysical Institute, University of Bergen 2 Christian Michelsen Research 3 Nansen Environmental and Remote Sensing Centre
Overview The OBLO infrastructure Why do we need it? Overview NORCOWE campaigns Some selected results What can we do in the future?
OBLO (Offshore Boundary Layer Observatory) Advanced mobile equipment for offshore wind related measurements in the atmospheric and oceanic boundary layer National Norwegian infrastructure project (2010-2020) Funded by the Norwegian Research Council with ca. 4 M Instrumentation owned by the Geophysical Institute, University of Bergen Operated in close collaboration with Christian Michelsen Research, Bergen, Norway For more info: http://oblo./
oblo.
OBLO instrumentation Interest in future collaboration? Contact: joachim.reuder@
Motivation Of interest atmosphere: Average wind speed Wind shear over the rotor disk Turbulence intensity Of interest ocean: Average current Wave conditions (slamming, breaking) Turbulence intensity The main problem: Massive lack of observational data offshore Source: http://www.ieawind.org/gwec_pdf/gwec%20annex23.pdf
Turbine atmosphere interaction - wakes Source: http://www.ict-aeolus.eu/about.html; Photo by Christian Steiness Source: http://galathea3.emu.dk/satelliteeye/projekter /wind/back_uk.html
Interaction foundation-ocean-seabed - scour Source: https://blogs.scientificamerican.com/but-not-simpler/scour-why-most-bridges-fail/
Overview NORCOWE campaigns Buoy deployment Sletringen (Nov 2010-Oct. 2011) Lidar motion test at UiA, Grimstad (August 2011) Lidar MEasurement Campaign at Sola airport (LIMECS; March August 2013) WINd Turbine Wake Experiment Wieringermeer (WINTWEX-W; November 2013 May 2014) Multi-Lidar measurement campaign at Lysefjorden Bridge (May 2014) Marstein field cruise (November 2013) Karmøy field cruise (November 2014) Offshore Boundary-Layer Experiment at Fino 1 (OBLEX- F1; May 2015 September 2016)
Buoy deployment Sletringen Nov.2010- Oct. 2011 Nearly one year of data for the detailed characterization of the near coast conditions over the whole water column of 277 m depth Temperature, salinity, density, current, turbulence
Lidar motion test Grimstad ZephIR300 (pulsed) WindCube V1 (CW) Bosch Rexroth Boxtel 6-DOF E-motion 1500 Motion System Measurement test of two moving LiDAR systems versus their «grounded» counterparts. Identify a suitable commercial LiDAR system for use on floating platforms.
Lidar motion test Grimstad
WINTWEX-W ECN test site Wieringermeer, November 2013-May 2014 o x 5 Nordex research turbines 80 m hub & rotor diameter (D) 6 upstream met masts lidar profiler upstream at 3.2 D lidar profiler downstream at 1.7 D lidar profiler downstream at 3.4 D scan. lidar downstream at 12.2D
WINTWEX-W
WINTWEX-W Surge Heave & Pitch of floater Surge Heave & Pitch of floater
WINTWEX-W wind speed turbulence intensity instantaneous 10 min avg. Geofysisk Institutt
Multi LiDAR campaign at Lysefjorden bridge Project managed by UoS and Norwegian Public Road Administration Investigate the wind field and associated turbulence structure along long bridge spans. Stimulate new LiDAR based measurement setups and corresponding data interpretation strategies. 5 x sonic anemometers mounted at the bridge 1 x 3D scanning LiDAR (100s) 2 synchronized continuous-wave short-range WindScanner LiDAR s (developed by DTU)
Multi LiDAR campaign at Lysefjorden bridge May 2014 Photos: UoS / UoB
Multi LiDAR campaign at Lysefjorden bridge
Marstein and Karmøy cruises
Marstein and Karmøy cruises
Instrument and method development
Instrument and method development Applications: Whitecaps coverage and air-sea interaction wave breaking Upper ocean turbulence Surface gravity waves attitude monitoring and motion correction
U N I V E R S I T Y O F B E R G E N Geophysical Institute OBLEX-F1: The Offshore Boundary Layer EXperiment at FINO-1 - Experimental setup and first results J. Reuder 1, M. Flügge 1, S. Kral 1, M. Bakhoday Pakyabi 1, B. Svardal 2, R. Frühmann 3, E. Cheynet 4, J. Bugonovic Jacobsen 4, J. Bachmann 5, B. Witha 6, D. Wagner 6, A. Fligg 6, A. Külpmann 6, J. Gottschall 7, O. Outzen 8, B. Gellately 9, J. Shah 9, B. Furevik 10, R. Krishnamurthy 11, H. J. S. Fernando 11 1 Geophysical Institute, University of Bergen; 2 Christian Michelsen Research; 3 UL DEWI; 4 University of Stavanger; 5 FuE Kiel GmbH; 6 University of Oldenburg; 7 Fraunhofer Institute for Wind Energy and Energy System Technology IWES Northwest; 8 BSH; 9 AXYS Technologies Inc.; 10 Norwegian Meteorological Institute; 11 University of Notre-Dame;
Location: FINO1 and Alpha Ventus FINO1, German Bight, May 2015 September 2016 (atmospheric part); May 2015 October 2015 (oceanic part) Source: https://commons.wikimedia.org/wiki/file:windpark_alpha_ventus_lagekarte.png Source: http://www.4coffshore.com/offshorewind/ Trianel FINO1 Alpha Ventus Borkum-Riffgrund 1
Measurement setup - Atmosphere
Measurement setup - Atmosphere Radiometer 3D scanning LiDAR Sonic anemometers
Measurement setup - Ocean IWES 2x LIDAR buoys Axys WindSentinel LIDAR buoy CMR Sailbuoy Wave sensor, temperature BSH Wave buoy Accelerometers, compass UIB/OBLO Bottom frame - ADCP, Aquadopp, ADV Bo UIB/OBLO Bottom frame - ADCP, Aquadopp, ADV UIB/OBLO Submerged buoy - Current meter UIB/OBLO Submerged buoy - ADCP UIB/OBLO MATS Submerged buoy - Microrider shear probes, Aquadopp
OBLEX-F1 research topics and questions Stability dependency of offshore wind profiles Characterization of turbulence (e.g. coherence) Air-sea interaction and wave effects on wind profiles and turbulence Structure and dynamics of wind turbine wakes under various stability conditions Effects of adjacent wind farms on wind profiles and turbulence characteristics Comparison of instruments and measurement methods Oceanic turbulence in different wave regimes Potential effects of a wind farm on current and turbulence characteristics
Oceanic deployments
Oceanic recovery Rapid biofouling at water temperatures > 18 ºC
Thank you for your attention! Contact: joachim.reuder@