Comparison of Different Measurement Techniques and a CFD Simulation in Complex Terrain

The Science of Making Torque from Wind

Schulz, Christoph^1 ; Hofsäß, Martin^2 ; Anger, Jan^2 ; Rautenberg, Alexander^3 ; Lutz, Thorsten^1 ; Wen Cheng, Po^2 ; Bange, Jens^3

Institute of Aerodynamics and Gas Dynamics (IAG), University of Stuttgart, Pfaffenwaldring 21, Stuttgart

70569, Germany^1

Stuttgart Wind Energy at Insitute of Aircraft Design (SWE), University of Stuttgart, Allmandring 5b, Stuttgart

70569, Germany^2

Environmental Physics, University of Tübingen, Hölderlinstr. 12, Tübingen

72076, Germany^3

关键词: CFD simulations;    Complex terrains;    Delayed-detached eddy simulation;    Measurement data;    Measurement techniques;    Southern Germany;    Turbulence intensity;    Wind speed and directions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/753/8/082017/pdf
DOI  :  10.1088/1742-6596/753/8/082017

来源: IOP

【 摘 要 】

This paper deals with a comparison of data collected by measurements and a simulation for a complex terrain test site in southern Germany. Lidar, met mast, unmanned aerial vehicle (UAV) measurements of wind speed and direction and Computational Fluid Dynamics (CFD) data are compared to each other. The site is characterised regarding its flow features and the suitability for a wind turbine test field. A Delayed-Detached-Eddy- Simulation (DES) was employed using measurement data to generate generic turbulent inflow. A good agreement of the wind profiles between the different approaches was reached. The terrain slope leads to a speed-up, a change of turbulence intensity as well as to flow angle variations.