ZURUECK HOCH VOR INHALT SUCHEN

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Proposing Institution

Institut für Meteorologie und Klimaforschung, Zugspitze KIT
Project Manager

Daniel Leukauf
Kreuzeckbahnstr. 19
82467 Garmisch-Partenkirchen
Abstract
Elevated locations like hilltops are of interest for on-shore windfarm applications as the mean wind is faster at greater heights. This is very important as the electric power generated by a wind turbine depends on the third power of the mean wind. However, a complex topography leads also to wind fields with strong horizontal and temporal variations as well as wind shear and increased turbulence. To understand both challenges and chances associated with complex terrain is of great importance for developers of wind turbines. Since all but one of the existing test sites are located in flat terrain, a site dedicated to complex terrain would be a great asset for the future development of on-shore wind power applications. Such a test-site is currently being built and this project aims at providing high-resolution simulations of the wind field under various meteorological conditions.We are using the Weather Research and Forecasting (WRF) Model to provide real-case simulations with a horizontal mesh size as fine as 50 m. Output data from this model will be used by our partners to drive the CFD model ANSYS CFX to obtain simulations with an even finer grid. The final stage of the modelling chain is the solver FLOWER which can simulate the flow around the wind turbine and the wake downstream.Key goals are- To create a modelling chain ranging from tens of kilometers to centimeters.- To perform and validate model simulations to create the first link of the model chain.- To assess the predictability of the flow at the test-site.- To deepen the knowledge of the generation and transport of turbulence and its impact on wind turbines in complex terrain.- To provide data to assess the problem of the formation of ice on the rotor blades.- To provide data and documentation for future projects, for example for the creation of a wind atlas.

Impressum, Conny Wendler