Aerodynamic benchmarking of the DeepWind design

Gabriele Bedon, Uwe Schmidt Paulsen, Helge Aagaard Madsen , Federico Belloni, Marco Raciti Castelli, Ernesto Benini

Research output: Contribution to conferencePosterResearchpeer-review

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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.
Original languageEnglish
Publication date2014
Number of pages1
Publication statusPublished - 2014
EventEuropean Wind Energy Conference & Exhibition 2014 - Fira de Barcelona Gran Via, Barcelona, Spain
Duration: 10 Mar 201413 Mar 2014
http://www.ewea.org/annual2014/

Conference

ConferenceEuropean Wind Energy Conference & Exhibition 2014
LocationFira de Barcelona Gran Via
CountrySpain
CityBarcelona
Period10/03/201413/03/2014
Internet address

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