Searched for: author:"Van Bussel, G.J.W."
(1 - 20 of 70)

Pages

document
de Tavernier, D.A.M. (author), Simao Ferreira, C. (author), van Bussel, G.J.W. (author)
To advance the design of a multimegawatt vertical-axis wind turbine (VAWT), application-specific airfoils need to be developed. In this research, airfoils are tailored for a VAWT with variable pitch. A genetic algorithm is used to optimise the airfoil shape considering a balance between the aerodynamic and structural performance of airfoils. At...
journal article 2019
document
Dighe, V.V. (author), De Oliveira Andrade, G.L. (author), Avallone, F. (author), van Bussel, G.J.W. (author)
This paper aims to study the aerodynamic performance of ducted wind turbines (DWT) using inviscid and viscous flow calculations by accounting for the mutual interaction between the duct and the rotor. Two generalized duct cross section geometries are considered while the rotor is modelled as an actuator disc with constant thrust coefficient....
journal article 2018
document
Giyanani, A.H. (author), Savenije, F.J. (author), van Bussel, G.J.W. (author)
The IEC standards prescribe an inflow wind field based on models with empirical assumptions to perform load calculations. The use of preview wind speed measurements using nacelle-mounted Lidars allows mitigation of structural loads by suggesting appropriate control action. This relationship is affected by uncertainty in site conditions and...
journal article 2018
document
van den Bos, L.M.M. (author), Sanderse, B. (author), Blonk, L. (author), Bierbooms, W.A.A.M. (author), van Bussel, G.J.W. (author)
During the design phase of an offshore wind turbine, it is required to assess the impact of loads on the turbine life time. Due to the varying environmental conditions, the effect of various uncertain parameters has to be studied to provide meaningful conclusions. Incorporating such uncertain parameters in this regard is often done by...
journal article 2018
document
Tang, J. (author), Avallone, F. (author), Bontempo, R. (author), van Bussel, G.J.W. (author), Manna, M. (author)
This paper reports an experimental investigation on the effect of the duct geometry on the aerodynamic performance of an aerofoil shaped ducted wind turbine (DWT). The tested two-dimensional model is composed of an aerofoil equipped with pressure taps and a uniform porous screen. The experimental setup is based on the assumption that the duct...
journal article 2018
document
Micaleff, Daniel (author), van Bussel, G.J.W. (author)
Urban wind energy research is crucial for the success or failure of wind turbines installed in the built environment. Research in this field is fragmented into various research groups working on different topics in isolation with seemingly few efforts of integrating the various fields. This review aims at highlighting the synergies between the...
journal article 2018
document
Baldacchino, D. (author), Simao Ferreira, C. (author), de Tavernier, D.A.M. (author), Timmer, W.A. (author), van Bussel, G.J.W. (author)
Passive vane-type vortex generators (VGs) are commonly used on wind turbine blades to mitigate the effects of flow separation. However, significant uncertainty surrounds VG design guidelines. Understanding the influence of VG parameters on airfoil performance requires a systematic approach targeting wind energy-specific airfoils. Thus, the 30...
journal article 2018
document
Zhang, Y. (author), van Zuijlen, A.H. (author), van Bussel, G.J.W. (author)
This paper aims to provide an explanation for the overprediction of aerodynamic loads by CFD compared to experiments for the MEXICO wind turbine rotor and improve the CFD prediction by considering laminar-turbulent transition modeling. Large deviations between CFD results and experimental measurements are observed in terms of sectional normal...
journal article 2017
document
Zhang, Y. (author), Gillebaart, T. (author), van Zuijlen, A.H. (author), van Bussel, G.J.W. (author), Bijl, H. (author)
This paper presents the experimental and numerical study on MEXICO wind turbine blades. Previous work by other researchers shows that large deviations exist in the loads comparison between numerical predictions and experimental data for the rotating MEXICO wind turbine. To reduce complexities and uncertainties, a non-rotating experimental...
journal article 2017
document
Berdowski, T.J. (author), Simao Ferreira, C. (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
document
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
document
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
document
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
document
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
document
De Oliveira Andrade, G.L. (author), Balbino Dos Santos Pereira, R. (author), Ragni, D. (author), Avallone, F. (author), van Bussel, G.J.W. (author)
The article seeks to unify the treatment of conservative force interactions between axi-symmetric bodies and actuators in inviscid ow. Applications include the study of hub interference, di_user augmented wind turbines and boundary layer ingestion propeller con_gurations. The conservation equations are integrated over in_nitesimal streamtubes to...
journal article 2016
document
Dighe, V.V. (author), Avallone, F. (author), van Bussel, G.J.W. (author)
In this paper, a computational approach, based on the solution of Reynolds-averaged-Navier–Stokes (RANS) equations, to describe the flow within and around a diffuser augmented wind turbine (DAWT) is reported. In order to reduce the computational cost, the turbine is modeled as an actuator disc (AD) that imposes a resistance to the passage of the...
journal article 2016
document
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,...
conference paper 2016
document
Baldacchino, D. (author), Simao Ferreira, C. (author), Ragni, D. (author), van Bussel, G.J.W. (author)
In this work, we present a simple inviscid point vortex model to study the dynamics of asymmetric vortex rows, as might appear behind misaligned vortex generator vanes. Starting from the existing solution of the in_nite vortex cascade, a numerical model of four base-vortices is chosen to represent two primary counter-rotating vortex pairs and...
journal article 2016
document
Giyanani, A.H. (author), Bierbooms, W.A.A.M. (author), van Bussel, G.J.W. (author)
Lidars have become increasingly useful for providing accurate wind speed measurements in front of the wind turbine. The wind field measured at distant meteorological masts changes its structure or was too distorted before it reaches the turbine. Thus, one cannot simply apply Taylor's frozen turbulence for representing this distant flow field at...
journal article 2016
document
van Kuik, G.A.M. (author), Peinke, Joachim (author), Nijssen, Rogier (author), Lekou, Denja (author), Mann, Jakob (author), Sørensen, Jens Nørkær (author), Simao Ferreira, C. (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
Searched for: author:"Van Bussel, G.J.W."
(1 - 20 of 70)

Pages