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Abrahamsen, Asger Bech (author), Liu, D. (author), Magnusson, Niklas (author), Thomas, A (author), Azar, Ziad (author), Stehouwer, Ewoud (author), Hendriks, E (author), Penzkofer, A. (author), Atallah, K (author), Dragan, R.R. (author), .Clark, R.E. (author), Deng, F. (author), Chen, Z (author), Karwatzki, D. (author), Mertens, A. (author), Parker, Max (author), Finney, Stephen J. (author), Polinder, H. (author)
Innovative drive trains targeted at 10-20 MW offshore turbines are investigated in the INNWIND.EU project in order to determine the impact on the Levelized Cost of Energy (LCoE) resulting when installed in the ,North sea at 50 m of water [1]. The two main technologies studied are superconducting direct drive (SCDD)[2] and the magnetic pseudo...
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
Dykes, K (author), Sanchez Perez Moreno, S. (author), Zahle, Frederik (author), Ning, A (author), McWilliam, M. (author), Zaayer, M B (author)
This presentation will provide an overview of progress to date in the development of a system modeling framework and ontology for wind turbines and plants as part of the larger IEA Wind Task 37 on wind energy systems engineering. The goals of the effort are to create a set of guidelines for a common conceptual architecture for wind turbines and...
abstract 2017
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Quaeghebeur, E.R.G. (author), Sanchez Perez Moreno, S. (author), Zaayer, M B (author)
The construction and management of an offshore wind farm involves many disciplines, e.g. meteorology and economics. It is hard for a single researcher to keep an overview of all the relevant concepts, models, and tools from these disciplines. Nevertheless, this is needed when performing integrated modeling or analysis in the offshore wind farm...
abstract 2017
document
van Wingerden, J.W. (author), Pao, L. (author), Fleming, P (author)
For wind farm control, the current practice in industry is that every turbine has its own wind turbine controller that will optimize its own performance in terms of power output, load mitigation, and/or reference tracking. However, in several national American and European1 research projects, researchers from industry and academia have shown...
abstract 2017
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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
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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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Benard, P. (author), Bricteux, L (author), Moureau, V. (author), Lartigue, G. (author), Beaudet, L. (author), Laine, R. (author), Viré, A.C. (author)
An horizontal axis wind turbine placed in a free stream develops a wake behind its rotor. Inside this wake, complex vortical instabilities are developing and can lead to turbulent structures generation1 . In order to predict performances and loads of wind turbines in wind farms, it is essential to accurately characterize these wakes and their...
abstract 2017
document
Leblanc, B.P. (author), Simao Ferreira, C. (author)
Research into the Vertical Axis Wind Turbine (VAWT) has been progressing over the last few years due to
the large shift in design constraints for large floating offshore wind turbines by leveraging tools and experience
from research beginning in the 1970s and lasting until the HAWT established market dominance in the 1990s. The beginning...
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
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Mulders, S.P. (author), Jager, Stéphane (author), Diepeveen, N.F.B. (author), van Wingerden, J.W. (author)
The drivetrain of most wind turbines currently being deployed commercially consists of a rotor-gearboxgenerator configuration in the nacelle. This abstract introduces the control system design and optimization for a wind turbine with a hydraulic drivetrain, based on the Delft Offshore Turbine (DOT) concept1 . This concept enables the connection...
abstract 2017
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Ong, Carmichael F. (author), Geijtenbeek, T. (author), Hicks, Jennifer L. (author), Delp, Scott L. (author)
Predictive simulations of human walking have great potential to expand our understanding of locomotion. For instance, they can isolate the effect of specific impairments on observed gait pathologies or aid in designing assistive devices by modeling human-device interactions. Introducing simulated impairments or adding augmentation devices to a...
abstract 2017
document
Boehmer, J.K. (author), Duinker, R.M.E. (author), Bentum, M (author)
Due to the latest funder requirements on data management and Open Data, documenting and managing research data during the research and preparing it for publication gained in importance. Making research data findable and accessible for decades via a trusted and certified data archive – such as 4TU.Centre for Research Data – and therefore enabling...
abstract 2018
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Succo, Andrea (author), Mittempergher, Silvia (author), Balsamo, Fabrizio (author), Bistacchi, Andrea (author), Storti, Fabrizio (author), Bruna, P.B.R. (author), Bertotti, G. (author)
abstract 2017
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Root, B.C. (author), Hanssen, R.F. (author), Vermeersen, L.L.A. (author), Munnik, M.E. (author), Vlijm, Rozemarijn (author)
In November 1934, Den Helder, The Netherlands, the start of a remarkable voyage commenced. The Hr. Ms.K-XVIII, a Dutch submarine, was about to set sail to Soerabaya, Indonesia. Onboard was a Dutch professor, Felix Andries Vening Meinesz. He was able to measure the Earth’s gravity field with similar precision as on land for the first time in...
abstract 2015
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Vardon, P.J. (author), Amorim Mota, N.J. (author), van Loosdrecht, Mark C.M. (author), Jonkers, H. (author)
Earth houses are considered sustainable and affordable as compared to houses built with concrete or fired clay bricks. Moreover, it preserves the vernacular social and spatial traditions (cultural identity) of the community. With rapid industrialization and the increase in popularity of concrete and brick constructions, a decline in earth houses...
abstract 2018
document
Geevers, Sjoerd (author), van der Vegt, Jaap (author), Mulder, W.A. (author)
We present and analyse a Symmetric Interior Penalty Discontinuous Galerkin (SIPDG) method combined with an explicit hybrid Local Time Stepping (LTS) scheme for solving seismic wave problems in heterogeneous anisotropic elastic media. The discontinuous Galerkin method allows for local adjustment of the mesh size and approximation order, and can...
abstract 2016
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Barendswaard, S. (author), Pool, D.M. (author), Abbink, D.A. (author)
abstract 2017
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Cleij, D. (author), Pool, D.M. (author), Mulder, M. (author), Bülthoff, Heinrich H. (author)
abstract 2017
document
van der El, K. (author), Pool, D.M. (author), Mulder, M. (author)
abstract 2017
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