Abstract
The aerodynamic benchmarking for the DeepWind rotor is conducted comparing different rotor geometries and solutions and keeping the comparison as fair as possible. The objective for the benchmarking is to find the most suitable configuration in order to maximize the power production and minimize the blade solicitation and the cost of energy.
Different parameters are considered for the benchmarking study. The DeepWind blade is characterized by a shape similar to the Troposkien geometry but asymmetric between the top and bottom parts. The blade shape is considered as a fixed parameter in the optimization process and, because of different blade element radii, it will experience different tip speed ratios in the same operational condition. This leads to a complex optimization problem, which must be carefully analyzed in order to find a suitable parameter set.
The number of blades in the analysis is varied from 1 to 4. In order to keep the comparison fair among the different configurations, the solidity is kept constant and, therefore, the chord length reduced. A second comparison is conducted considering different blade profiles belonging to the symmetric NACA airfoil family. Finally, a chord optimization along the blade span is conducted, in order to find the optimal chord distribution to maximize the energy extraction.
Different parameters are considered for the benchmarking study. The DeepWind blade is characterized by a shape similar to the Troposkien geometry but asymmetric between the top and bottom parts. The blade shape is considered as a fixed parameter in the optimization process and, because of different blade element radii, it will experience different tip speed ratios in the same operational condition. This leads to a complex optimization problem, which must be carefully analyzed in order to find a suitable parameter set.
The number of blades in the analysis is varied from 1 to 4. In order to keep the comparison fair among the different configurations, the solidity is kept constant and, therefore, the chord length reduced. A second comparison is conducted considering different blade profiles belonging to the symmetric NACA airfoil family. Finally, a chord optimization along the blade span is conducted, in order to find the optimal chord distribution to maximize the energy extraction.
| Original language | English |
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| Publication date | 2014 |
| Number of pages | 1 |
| Publication status | Published - 2014 |
| Event | European Wind Energy Conference & Exhibition 2014 - Fira de Barcelona Gran Via, Barcelona, Spain Duration: 10 Mar 2014 → 13 Mar 2014 http://www.ewea.org/annual2014/ |
Conference
| Conference | European Wind Energy Conference & Exhibition 2014 |
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| Location | Fira de Barcelona Gran Via |
| Country/Territory | Spain |
| City | Barcelona |
| Period | 10/03/2014 → 13/03/2014 |
| Internet address |