KonTest – Conception for a wind energy testing field in mountainous, complex terrain
In the course of the BMWi financed joint research project KonTest, it is aimed to describe the wind field characteristics in complex terrain with focus on wind energetic production efficiency. In a coordinated effort, observations and modelling techniques are combined in order to analyze the effect of an escarpment on local turbulence and wind field. The 'Albtrauf' near the city of Geislingen serves as test area for setting up measurements and mesoscale atmospheric model runs.
The project is coordinated by the University of Stuttgart and the wind energy research cluster 'WindForS' (http://www.windfors.de/). Other partners which are involved are the University of Tuebingen and Technical University of Munich (Research Field Renewable Energy Landscapes LAREG).
The role of the IMK-IFU on the one hand is to retrieve vertical profiles of temperature and wind speed from a SODAR-Rass device operating in the vicinity of the escarpment. On the other hand, the mesoscale atmospheric model WRF is used to simulate wind fields and turbulent structures for selected periods. WRF is applied for four nested domains with grid widths between 12.5 km for the outmost domain and 50 m for the innermost domain. In order to resolve the turbulent stucture of the wind field as far as possible, WRF is applied in LES mode for the innermost model domain. The results are used to support the effort in setting up test wind turbines within this area and in complex topography in general.
Results from WRF simulations: Wind field at 80 m above the ground and vertical wind around the test area as simulated for the third domain with 500 m grid witdth.
Observations and model results presentet at project meeting in Stuttgart, 27. July 2015: Presentation