ZURUECK HOCH VOR INHALT SUCHEN

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Proposing Institution

DLR Institut für Physik der Atmosphäre
Project Manager

Dr. Antonia Englberger
Münchnerstr. 20
82234 Wessling
Abstract
Wind energy research covers a variety of different fields, e.g. aerodynamic control and design methods for turbine blades, electricity conversion, wind tunnel tests or wind farms and wind farm control. They all focus on the impact of the incoming wind to gain maximum power output of the wind turbine. The different atmospheric stratifications, occurring throughout the diurnal cycle, come into the focus of the wind-energy research quite recently. However, especially the diurnally varying wind conditions and turbulence levels, in combination with the surface conditions (homogeneous surface, heterogeneous surface, hilly terrain), have the main impact on the wind-turbine wake characteristics.In this project, we propose a series of high-resolution numerical simulations to investigate the mechanisms responsible for the different wake characteristics occurring as a combination of the diurnal cycle impact and hilly terrain. The results will be validated in a first step against the unique Perdigão data set, which contributes to the European Wind Atlas. As second approach, the results are validated against the data of the DLR Forschungswindpark. In this second step, the model resolution will also be refined. Both results will be used to improve model parameterizations and mechanisms of wind-turbine simulations. For this purpose, high-resolution parameterizations of the forces a wind turbine exerts on the atmospheric flow were already implemented in our numerical code (Englberger & Dörnbrack, 2017a). Further, the impact of four regimes in combination with homogeneous surface occurring during the diurnal cycle (Englberger & Dörnbrack, 2017b) and of heterogenous (Englberger & Dörnbrack, 2017b) and hilly terrain (Heimann et al., 2017) were investigated in previous work.

Impressum, Conny Wendler