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Geurts, B.M. (author), Simao Ferreira, C. (author), Van Bussel, G.J.W. (author)Wind energy in the urban environment faces complex and often unfavorable wind conditions. High turbulence, lower average wind velocities and rapid changes in the wind direction are common phenomena in the complex built environments. A possible way to improve the cost-efficiency of urban wind turbines is the application of flowenhancing...conference paper 2010
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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. The validation of LiDAR measurements and comparisons is of high importance for further applications of the data.conference paper 2015
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Baldacchino, D. (author), Ragni, D. (author), Simao Ferreira, C.J. (author), Van Bussel, G.J.W. (author)In this work, the measured modulated integral boundary layer (IBL) characteristics of low-profile vortex generators (VGs) are used to validate new developments in a viscousinviscid interaction code which is modified to incorporate the effect of the passive mixing devices. The motivations are laid out and sample validation data is presented...conference paper 2015
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Rajan, N.K. (author), Vire, A. (author), Schmehl, R. (author), Van Bussel, G.J.W. (author)A novel fluid-structure interaction (FSI) simulation framework is being developed at the KitePower group of TU Delft. Developing an FSI simulator suitable for the kite problem has to take into account the following factors.conference paper 2015
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- Dixon, K. (author), Simao Ferreira, C.J. (author), Hofemann, C. (author), Van Bussel, G.J.W. (author), Van Kuik, G.A.M. (author) conference paper 2008
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Giyanani, A.H. (author), Bierbooms, W.A.A.M. (author), Van Bussel, G.J.W. (author)Wind turbine design, control strategies often assume Taylor’s frozen turbulence where the fluctuating part of the wind is assumed to be constant. In practise, the wind turbine faces higher turbulence in case of gusts and lower turbulence in some cases. With Lidar technology, the frozen turbulence assumption could be avoided and the evolution of...conference paper 2015
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Micallef, D. (author), Simao Ferreira, C.J. (author), Sant, T. (author), Van Bussel, G.J.W. (author)The main motivation behind this work is to create a purely analytical engineering model for wind turbine wake upward deflection due to shear flow, by developing a closed form solution of the velocity field due to an oblique vortex ring. The effectiveness of the model is evaluated by comparing the results with those of a free-wake model. The...conference paper 2010
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- Simao Ferreira, C.J. (author), Van Bussel, G.J.W. (author), Scarano, F. (author), Van Kuik, G.A.M. (author) conference paper 2008
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Bos, R. (author), Bierbooms, W.A.A.M. (author), Van Bussel, G.J.W. (author)An important problem that arises during the design of wind turbines is estimating extreme loads with sufficient accuracy. This is especially difficult during iterative design phases when computational resources are scarce. Over the years, many methods have been proposed to extrapolate extreme load distributions from relatively short time series...conference paper 2015
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Akay, B. (author), Micallef, D. (author), Ferreira, C.S. (author), Van Bussel, G.J.W. (author)This paper sets out to describe the measurements and computations to construct three components of velocity field around the blade. The primary aim of the measurements was to gain insight into the physics of the flow field produced by a horizontal axis wind turbine-HAWT blade. Stereo Particle Image Velocimetry experiments were performed on a two...conference paper 2011
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Micallef, D. (author), Akay, B. (author), Sant, T. (author), Simao Ferreira, C.J. (author), Van Bussel, G.J.W. (author)The scope of this work was to investigate radial flow component for a Horizontal Axis Wind Turbine in axial flow conditions and to assess its impact on the turbine operation. This was done by means of Particle Image Velocimetry and numerical simulation with a 3D unsteady potential-flow panel model. A direct comparison between the numerical and...conference paper 2011
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- Politakis, G. (author), Haans, W. (author), Van Bussel, G.J.W. (author) conference paper 2008
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Van der Meulen, M.B. (author), Ashuri, T. (author), Van Bussel, G.J.W. (author), Molenaar, D.P. (author)In order to make offshore wind power a cost effective solution that can compete with the traditional fossil energy sources, cost reductions on the expensive offshore support structures are required. One way to achieve this, is to reduce the uncertainty in wave load calculations by using a more advanced model for wave kinematics. As offshore wind...conference paper 2012
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Castillo Capponi, P. (author), Van Bussel, G.J.W. (author), Ashuri, T. (author), Kallesoe, B. (author)The linear scaling laws for upscaling wind turbine blades show a linear increase of stresses due to the weight. However, the stresses should remain the same for a suitable design. Application of linear scaling laws may lead to an upscaled blade that may not be any more a feasible design. In this paper a non-linear upscaling approach is presented...conference paper 2011
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Ashuri, T. (author), Van Bussel, G.J.W. (author), Zaayer, M.B. (author), Van Kuik, G.A.M. (author)The purpose of this paper is to integrate the controller design of wind turbines with structure and aerodynamic analysis and use the final product in the design optimization process (DOP) of wind turbines. To do that, the controller design is automated and integrated with an aeroelastic simulation tool. This integrated tool is linked with an...conference paper 2010
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- Simao Ferreira, C.J. (author), Scarano, F. (author), Van Kuik, G.A.M. (author), Van Bussel, G.J.W. (author) conference paper 2007
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Akay, B. (author), Simao Ferreira, C.J. (author), Van Bussel, G.J.W. (author), Tescione, G. (author)A detailed quantitative description of the aerodynamics of a horizontal axis wind turbine (HAWT) is difficult due to complexity of the flow field. Several methods from experimental to analytical are used to investigate the aerodynamics of a HAWT. In the present study, a wind tunnel experiment and computational fluid dynamics (CFD) simulations...conference paper 2010
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Micallef, D. (author), Kloosterman, M. (author), Ferreira, C.S. (author), Sant, T. (author), Van Bussel, G.J.W. (author)The primary objective of the MEXICO (Model Experiments in Controlled Conditions) project was to generate experimental data for validation of models for wind turbines. Kulite©pressure sensors were used for pressure measurements while Particle Image Velocimetry was used with the aim of tracking the tip vortex trajectory. The pressure measurements...conference paper 2010
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Akay, B. (author), Ferreira, C.S. (author), Van Bussel, G.J.W. (author)Several methods from experimental to analytical are used to investigate the aerodynamics of a horizontal axis wind turbine. To understand 3D and rotational effects at the root region of a wind turbine blade, correct modeling of the flow field is essential. Aerodynamic models need to be validated by accurate experimental data. In this paper, the...conference paper 2010
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- Baldacchino, D. (author), Simao Ferreira, C.J. (author), Van Bussel, G.J.W. (author) conference paper 2014