Searched for: author%3A%22Van+Bussel%2C+G.J.W.%22
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Berdowski, T.J. (author), Ferreira, Carlos (author), van Zuijlen, A.H. (author), van Bussel, G.J.W. (author)
A PhD project is being carried out on the topic of far-wake aerodynamics of Horizontal Axis Wind Turbines (HAWTs) in yawed conditions, which has a large relevance for wind farm design and optimization. Characteristic for a turbine in yaw are the inherent unsteady and non-uniform rotor loading, and the typical wake deflection and strong three...
abstract 2017
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De Oliveira Andrade, G.L. (author), Balbino dos Santos Pereira, R. (author), van Bussel, G.J.W. (author), Avallone, F. (author), Ragni, D. (author)
Flow augmentation consists in modifying mass flow across the actuation plane of a rotor to enhance energy extraction or propulsive efficiency. The talk sketches the distinction between passive and active rotor augmentation strategies. Power coefficient trends are compared analytically while numerical results illustrate differences in flow...
abstract 2017
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Dighe, V.V. (author), De Oliveira Andrade, G.L. (author), van Bussel, G.J.W. (author)
The practice of ducting wind turbines has shown a beneficial effect on the overall performance, when compared to an open turbine of the same rotor diameter1. However, an optimization study specifically for ducted wind turbines (DWT’s) is missing or incomplete. This work focuses on a numerical optimization of the duct orientation and the ideal...
abstract 2017
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Tang, J. (author), van Bussel, G.J.W. (author)
A new high-lift aerofoil modification for the duct has been developed and will be experimentally tested in a small wind tunnel. Aerofoils for such wind tunnel ducts typically operate in the low Reynolds number range from 2 × 105 to 6 × 105. The effect of a duct and of rotor on power and pressure drop were considered separately in previous...
abstract 2017
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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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Lignarolo, L. (author), Ragni, D. (author), Simao Ferreira, C.J. (author), van Bussel, G.J.W. (author)
The present paper is the summary of 3 years of research on the wake aerodynamics of horizontal axis wind turbine at Delft University of Technology, the Netherlands. In particular, the main results and the conclusions of two experimental campaigns are collected. The underlying research question is: how do the near-wake turbulent flow structures...
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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Van Bussel, G.J.W. (author), Zaayer, M.B. (author)
The DOWEC projects aims at implementation of large wind turbines in large scale wind farms. part of the DOWEC project a concepts study was performed regarding the achievable reliability and availability levels. A reduction with a factor of 2 with regard to the present state of the art seems fairly easy achievable. This is however not sufficient...
conference paper 2001
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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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