Comparison of CFD Simulation to UAS Measurements for Wind Flows in Complex Terrain: Application to the WINSENT Test Site
| Autor: | Kjell zum Berge, Alexander Rautenberg, Asmae El Bahlouli, Hermann Knaus, Martin Schön, Jens Bange |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
unsteady Reynolds averaged Navier-Stokes (URANS)
Control and Optimization 010504 meteorology & atmospheric sciences Planetary boundary layer 020209 energy Flow (psychology) Energy Engineering and Power Technology Terrain 02 engineering and technology Escarpment Computational fluid dynamics lcsh:Technology 01 natural sciences design of experiments (DoE) Physics::Fluid Dynamics complex terrain 0202 electrical engineering electronic engineering information engineering wind simulation Electrical and Electronic Engineering Engineering (miscellaneous) 0105 earth and related environmental sciences geography geography.geographical_feature_category lcsh:T Renewable Energy Sustainability and the Environment business.industry Turbulence Boundary layer Turbulence kinetic energy unmanned aircraft system (UAS) business Geology Energy (miscellaneous) Marine engineering |
| Zdroj: | Energies Volume 12 Issue 10 Energies, Vol 12, Iss 10, p 1992 (2019) |
| ISSN: | 1996-1073 |
| Popis: | This investigation presents a modelling strategy for wind-energy studies in complex terrains using computational fluid dynamics (CFD). A model, based on an unsteady Reynolds Averaged Navier-Stokes (URANS) approach with a modified version of the standard k-&epsilon model, is applied. A validation study based on the Leipzig experiment shows the ability of the model to simulate atmospheric boundary layer characteristics such as the Coriolis force and shallow boundary layer. By combining the results of the model and a design of experiments (DoE) method, we could determine the degree to which the slope, the leaf area index, and the forest height of an escarpment have an effect on the horizontal velocity, the flow inclination angle, and the turbulent kinetic energy at critical positions. The DoE study shows that the primary contributor at a turbine-relevant height is the slope of the escarpment. In the second step, the method is extended to the WINSENT test site. The model is compared with measurements from an unmanned aircraft system (UAS). We show the potential of the methodology and the satisfactory results of our model in depicting some interesting flow features. The results indicate that the wakes with high turbulence levels downstream of the escarpment are likely to impact the rotor blade of future wind turbines. |
| Databáze: | OpenAIRE |
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