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Annual Report 2015
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NOWITECH
Norwegian Research Centre for Offshore Wind Technology
Result
TRL Impact
1 Model: IFE - 3DFloat integrate simulation
tool
7 Integrated OWT models are essential to research and engineering.
The model is in commercial use in the OWT industry.
2 Model: MARINTEK SIMO-RIFLEX simulation
software package
7 Integrated OWT models are essential to research and engineering.
The model is in commercial use in the OWT industry.
3 Model: IFE - 3DWind offshore wind
turbine park wake CFD simulation tool.
Development and validation finished 2011.
6 Understanding and simulation of the wake effects are essential to park
layout, park energy prediction and important to turbine wind loads
predictions.
4 Model: SINTEF ICT & NTNU IFEM-CFD fluid
structure simulation tool
3 When further developed the model can be able to simulate how a
deforming OWT interacts with sea and air, which can be important for
example for advanced rotor research and engineering.
5 Method: NTNU Dept. of Mathematical
Sciences
- A posteriori based error estimator
3 This method could be used to increased accuracy and/or speed numerical
simulations, if it for example were implemented in CFD or FEM simulations
software.
6 Software: MARINTEK Floatopt/WindOpt
spare buoy and semi-sub offshore wind
turbine and mooring optimization soft-
ware tool.
4 Can do cost optimized design of spar buoy and semi-sub type OWT
substructure and mooring and minimize CAPEX in these areas.
7 Software: IFE - ALSIM / INVALSIM general
and offshore wind turbine optimization
software tool. Development finished in
2011.
8 When coupled with another model this software is able to cost optimize
systems or components and minimize LCOE. Such tools are commonly
used in many industries. It has been used for rotor, mooring and tower
optimization. Services provided to the OWT industry.
8 Method: IFE, CD-adapco - use of
commercial CFD software simulations for
wind turbine aerodynamics.
5 State of the art CFD tools are the computer tools we have that can offer
the most insight into fluid dynamics phenomena, for example rotor
performance under normal or faulty operations. It’s part of the standard
toolbox for advanced research and engineering. CFD simulation services
have been performed for to the OWT industry.
9 Method: IFE, CD-adapco – use of
commercial CFD simulation tools for OWT
hydrodynamics
5 Integrated engineering tools rely of simplification to be simple and fast
enough for engineering needs. The cost of this is reduced realism and
uncertainties. CFD can be used when more accurate results are needed,
e.g. in the case of larger waves. We observe a trend of increasing use of
CFD in the industry.
10 Prototype: Fugro-OCEANOR float-
ing met-ocean buoy with LIDAR for
measuring wind speed at different heights
above sea level.
8 NOWITECH contributed to the start-up of this development. It is now
offered as a commercial product by Fugro OCEANOR. It can drastically
reduce the cost of collecting data on current, waves and wind at an
offshore site.
11 Comparison of software codes for
analysing semi-sub wind turbines
pinpointing accuracy
NA Several research partners in WPA have been involved in the OC4 study
under the auspices of IEA regarding comparison of software and
experiments for analysing various offshore wind turbines. The result is
better software and improved knowledge of how to use such software.
This is of value to both research and industry.
12 Novel design of brace-less semi-submersible platform for 5 MW wind
turbine
2 A preliminary design of a semi-submersible platform for a horizontal axis 5
MW wind turbine has been developed as a milestone deliverable in WPA.
13 Experimental techniques for offshore
wind turbines.
3 Scaled model testing is important for validation of methods and
design-tools. Techniques where load effects from wind and waves can be
combined for scaled models will lead to more accurate design tools and
more optimal and cost effective designs.
Table 2: New models, methods, processes and technology in development.
NOWITECH INNOVATIONS 2015 WPA