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Englberger, Antonia and Dörnbrack, Andreas (2018) Wind-turbine wakes responding to stably stratified flow over complex terrain. Journal of Physics: Conference Series, 1037, pp. 1-11. Institute of Physics (IOP) Publishing. DOI: 10.1088/1742-6596/1037/7/072014 ISSN 1742-6588
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Official URL: http://dx.doi.org/10.1088/1742-6596/1037/7/072014
Abstract
The wake characteristics of a hill-top wind turbine are investigated by means of large-eddy simulations (LESs) of stably stratified atmospheric boundary-layer (ABL) flows. All simulations are conducted with synchronized turbulent inflow data retrieved from an LES of diurnal cycle-driven boundary-layer flow over homogeneous surface. An investigation of different (weak, moderate, strong) stably stratified flow regimes passing over various 3 D hill configurations with heights up to 50 m reveals that the occurrence of flow separation not only depends on hill properties but also on the atmospheric stratification. The hill-top wake characteristics of all flow regimes are compared with wakes resulting from the same flow fields passing through the same wind turbine, however, sited on a homogeneous surface. For the same atmospheric stratification the flow over the hill impacts only the near-wake region. In contrast, the stratification impact on the hill-top wind-turbine wake is much more distinct, especially, in the far wake.
| Item URL in elib: | https://elib.dlr.de/121435/ | |||||||||
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| Document Type: | Article | |||||||||
| Title: | Wind-turbine wakes responding to stably stratified flow over complex terrain | |||||||||
| Authors: |
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| Date: | 2018 | |||||||||
| Journal or Publication Title: | Journal of Physics: Conference Series | |||||||||
| Refereed publication: | Yes | |||||||||
| Open Access: | Yes | |||||||||
| Gold Open Access: | Yes | |||||||||
| In SCOPUS: | Yes | |||||||||
| In ISI Web of Science: | No | |||||||||
| Volume: | 1037 | |||||||||
| DOI : | 10.1088/1742-6596/1037/7/072014 | |||||||||
| Page Range: | pp. 1-11 | |||||||||
| Publisher: | Institute of Physics (IOP) Publishing | |||||||||
| ISSN: | 1742-6588 | |||||||||
| Status: | Published | |||||||||
| Keywords: | large-eddy Simulation, loundary-layer, hill properties | |||||||||
| HGF - Research field: | Energy | |||||||||
| HGF - Program: | Renewable Energies | |||||||||
| HGF - Program Themes: | Wind Energy | |||||||||
| DLR - Research area: | Energy | |||||||||
| DLR - Program: | E SW - Solar and Wind Energy | |||||||||
| DLR - Research theme (Project): | E - Wind Energy | |||||||||
| Location: | Oberpfaffenhofen | |||||||||
| Institutes and Institutions: | Institute of Atmospheric Physics > Transport Meteorology | |||||||||
| Deposited By: | Ziegele, Brigitte | |||||||||
| Deposited On: | 22 Aug 2018 17:43 | |||||||||
| Last Modified: | 22 Aug 2018 17:43 |
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