Assessment of blade element momentum codes under varying turbulence levels by comparing with blade resolved computational fluid dynamics
| Autor: | Maria Aparicio-Sanchez, Yusik Kim, Georg Pirrung, Thorsten Lutz, Helge Aa. Madsen |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Momentum (technical analysis) 060102 archaeology Blade (geometry) Renewable Energy Sustainability and the Environment Turbulence business.industry 020209 energy 06 humanities and the arts 02 engineering and technology Inflow Mechanics Radius Computational fluid dynamics Turbine Azimuth 0202 electrical engineering electronic engineering information engineering 0601 history and archaeology business |
| Zdroj: | Renewable Energy. 160:788-802 |
| ISSN: | 0960-1481 |
| Popis: | Unsteady load calculations for a large wind turbine using two blade element momentum (BEM) codes (FAST, HAWC2) are compared with results from blade resolved computational fluid dynamics simulations (FLOWer). This is to assess the performance of BEM under varying turbulence levels. Instantaneous and mean of power, spectral data and sectional blade forces are analysed for the three codes. The AVATAR research turbine with a radius of 102.88 m is used in this study. Based on comparisons, FLOWer and HAWC2 show a very close trend in mean power variations with different turbulence intensities. In contrast, FAST does not show a similar trend. This is conjectured to be due to different implementation in the BEM codes of the unsteady turbulence inflows, such as azimuthal variation of induction and dynamic inflow. The maximum error of C P is 6 % for FAST and 1 % for HAWC2 compared to FLOWer. |
| Databáze: | OpenAIRE |
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