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van Kuik, G.A.M. (author), Peinke, Joachim (author), Nijssen, Rogier (author), Lekou, Denja (author), Mann, Jakob (author), Sørensen, Jens Nørkær (author), Ferreira, Carlos (author), van Wingerden, J.W. (author), Schlipf, David (author), Gebraad, P.M.O. (author), Polinder, H. (author), Abrahamsen, Asger Bech (author), van Bussel, G.J.W. (author), Sørensen, John Dalsgaard (author), Tavner, Peter (author), Botasso, Carlo (author), Muskulus, Michael (author), Matha, Denis (author), Lindeboom, Han (author), Degraer, Steven (author), Kramer, Oliver (author), Lehnhoff, Sebastian (author), Sonnenschein, Michael (author), Sørensen, Poul Ejnar (author), Kunneke, R.W. (author), Morthorst, Poul Erik (author), Skytte, Klaus (author)The European Academy of Wind Energy (eawe), representing universities and institutes with a significant wind energy programme in 14 countries, has discussed the long-term research challenges in wind energy. In contrast to research agendas addressing short- to medium-term research activities, this eawe document takes a longer-term perspective,...review 2016
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- van Bussel, G.J.W. (author), van Holten, Th. (author), van Kuik, G.A.M. (author) report 1982
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- van Bussel, G.J.W. (author), Hensing, P.C. (author), van Kuik, G.A.M. (author) report 1980
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- Masson, C. (author), Johansen, J. (author), Sorensen, N.N. (author), Zahle, F. (author), Bak, C. (author), Madsen, H.A. (author), Politis, E. (author), Schepers, G. (author), Lindenburg, K. (author), Snel, H. (author), Van Rooij, R.P.J.O.M. (author), Arens, E.A. (author), Van Bussel, G.J.W. (author), Van Kuik, G.A.M. (author), Meng, F.Z. (author), Sant, T. (author), Knauer, A. (author), Moe, G. (author), Munduate, X. (author), Gonzalez, A. (author), Ferrer, E. (author), Gomez, S. (author), Barakos, G. (author), Ivanell, S. (author), Schreck, S. (author) report 2008
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De Oliveira Andrade, G.L. (author), Balbino dos Santos Pereira, R. (author), Timmer, W.A. (author), Ragni, D. (author), Lau, F. (author), van Bussel, G.J.W. (author)There are many ways to learn from data. Our first experiment consisted in reproducing the way aerodynamicists work [2] with a genetic optimizer. The data pool was too narrow and asymptotic tendencies were unreliable. Our 2nd Experiment, a simple version of [4], had a virtually unlimited data pool and used neural networks. Results were better,...poster 2016
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Holtslag, M.C. (author), Bierbooms, W.A.A.M. (author), Van Bussel, G.J.W. (author)Atmospheric stability strongly influences wind shear and thus has to be considered when performing load calculations for wind turbine design. Numerous methods exist however for obtaining stability in terms of the Obukhov length L as well as for correcting the logarithmic wind profile. It is therefore questioned to what extend the choice of...journal article 2014
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- Simao Ferreira, C.J. (author), van Kuik, G.A.M. (author), van Bussel, G.J.W. (author), Scarano, F. (author) journal article 2008
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Akay, B. (author), Micallef, D. (author), Simao Ferreira, C.J. (author), Van Bussel, G.J.W. (author)In this study, the effect of the parameters playing a role in the root flow behavior of HAWT are only partly understood. To better reveal the root flow properties, this study presents the progression of HAWT blade root flow at two different blade geometries and at two different tip speed ratios. The effects of the geometry and the tip speed...journal article 2014
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Pereira, R. (author), Van Bussel, G.J.W. (author), Timmer, W.A. (author)The increasing size of Horizontal Axis Wind Turbines and the trend to install wind farms further offshore demand more robust design options. If the pitch system could be eliminated, the availability of Horizontal Axis Wind Turbines should increase. This research investigates the use of active stall control to regulate power production in...journal article 2014
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Holtslag, M.C. (author), Bierbooms, W.A.A.M. (author), Van Bussel, G.J.W. (author)In this paper the dependence of wind turbine fatigue loads on atmospheric stability is assessed. It is shown that fatigue loads depend strongly on stability, and highest loads occur for very unstable conditions. For a given hub height wind speed one can dene an equivalent atmospheric stability that corresponds to the same cumulative loads as if...journal article 2014
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Lignarolo, L. (author), Ragni, D. (author), Simao Ferreira, C.J. (author), Van Bussel, G.J.W. (author)The actuator disc (AD) model is commonly used to simplify the simulation of horizontal-axis wind-turbine aerodynamics. The limitations of this approach in reproducing the wake losses in wind farm simulations have been proven by a previous research. The present study is aimed at providing an experimental analysis of the near-wake turbulent flow...journal article 2016
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- Van Heemst, J.W. (author), Baldacchino, D. (author), Mehta, D. (author), Van Bussel, G.J.W. (author) journal article 2014
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Baldacchino, D. (author), Van Bussel, G.J.W. (author)In the present study, a simple inviscid vortex ring (VR) modelling approach is used to represent the developing rotor wake. This allows a straightforward investigation and comparison of the impact of uniform, yawed and sheared flow conditions on the development of the rotor wake, with the additional possibility of including ground effect. The...journal article 2014
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- Sant, A. (author), Van Kuik, G.A.M. (author), Van Bussel, G.J.W. (author) journal article 2008
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Giyanani, A.H. (author), Bierbooms, W.A.A.M. (author), Van Bussel, G.J.W. (author)Remote sensing of the atmospheric variables with the use of Lidar is a relatively new technology field for wind resource assessment in wind energy. A review of the draft version of an international guideline (CD IEC 61400-12-1 Ed.2) used for wind energy purposes is performed and some extra atmospheric variables are taken into account for proper...journal article 2015
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- Echavarria, E. (author), Tomiyama, T. (author), Van Bussel, G.J.W. (author) journal article 2007
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- Van Bussel, G.J.W. (author) journal article 2007
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Micallef, D. (author), Akay, B. (author), Simao Ferreira, C.J. (author), Sant, T. (author), Van Bussel, G.J.W. (author)The tip vortex of a wind turbine rotor blade originates as a result of a complex distribution of vorticity along the blade tip thickness. While the tip vortex evolution was extensively studied previously in other work, the mechanism of the initiation of the tip vorticity in a 3D rotating environment is still somewhat obscured due to lack of...journal article 2014
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Dighe, V.V. (author), Suri, Dhruv (author), Avallone, F. (author), van Bussel, G.J.W. (author)Ducted wind turbines (DWTs) can be used for energy harvesting in urban areas where non-uniform flows are caused by the presence of buildings or other surface discontinuities. For this reason, the aerodynamic performance of DWTs in yawed-flow conditions must be characterized depending upon their geometric parameters and operating conditions. A...journal article 2021
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Chrysochoidis-Antsos, N. (author), van Bussel, G.J.W. (author), Bozelie, Jan (author), Mertens, Sander M. (author), van Wijk, A.J.M. (author)Micro wind turbines can be structurally integrated on top of the solid base of noise barriers near highways. A number of performance factors were assessed with holistic experiments in wind tunnel and in the field. The wind turbines underperformed when exposed in yawed flow conditions. The theoretical cosθ theories for yaw misalignment did not...journal article 2021