Searched for: mods_originInfo_publisher_s:"TNO"
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van Zomeren, A. (author), Koper, R. (author), Dijkstra, J.J. (author), Comans, R.N.J. (author)
Analysis of dissolved organic carbon (DOC) is widely used to quantify the sum of organic carbon species in water. Analyzers based on wet chemical oxidation (WCO) usually have a relatively low detection limit (±1 μg of C/L) and are, therefore, well suited for analyses of DOC in environmental samples (e.g., surface water, groundwater, or seawater)...
article 2021
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Traversari, A.A.L. (author)
article 2021
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Koopmans, L. (author)
article 2021
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van Duinen, T. (author)
De gebouwde omgeving is een dankbaar onderzoeksgebied voor de onderzoekers van TNO. Dat komt deels door de traditionele bouwmethodes en bouwprocessen die men hanteert. Daar is nog veel te winnen. Rob Roef, TNO Clustermanager Digitalisation binnen de sector Bouw & Infra: “Ziekenhuizen zijn complex en voortdurend in beweging. Er wordt veel...
article 2021
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Traversari, A.A.L. (author), Saurwalt, F. (author)
article 2021
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Jansen, M. (author), Staffell, I. (author), Kitzing, L. (author), Quoilin, S. (author), Wiggelinkhuizen, E.J. (author), Bulder, B. (author), Riepin, I. (author), Musgens, F. (author)
Offshore wind energy development has been driven by government support schemes; however, recent cost reductions raise the prospect of offshore wind power becoming cheaper than conventional power generation. Many countries use auctions to provide financial support; however, differences in auction design make their results difficult to compare....
article 2020
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Eecen, P.J. (author)
article 2020
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Mancini, S. (author), Boorsma, K. (author), Caboni, M. (author), Curmier, M. (author), Lutz, T. (author), Schito, P. (author), Zasso, A. (author)
The disruptive potential of floating wind turbines has attracted the interest of both the industry and the scientific community. Lacking a rigid foundation, such machines are subject to large displacements whose impact on aerodynamic performance is not yet fully explored. In this work, the unsteady aerodynamic response to harmonic-surge motion...
article 2020
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Neunaber, I. (author), Holling, M. (author), Stevens, R.J.A.M. (author), Schepers, J.G. (author), Peinke, J. (author)
Wind turbines are usually clustered in wind farms which causes the downstream turbines to operate in the turbulent wakes of upstream turbines. As turbulence is directly related to increased fatigue loads, knowledge of the turbulence in the wake and its evolution are important. Therefore, the main objective of this study is a comprehensive...
article 2020
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Wenz, F. (author), Boorsma, K. (author), Lutz, T. (author), Kramer, E. (author)
In cases with turbulent inflow, the analysis of the temporal development of forces could provide more insight into differences in calculated fatigue loads of wind turbines. While lifting-line-codes and the Blade-Element-Momentum (BEM) approach do not resolve the inflow, Computational Fluid-Dynamic (CFD) codes resolve the entire flow field. A...
article 2020
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Krishna Swamy, S. (author), Szklarz, S. (author), Fonseca, R.M. (author), Bulder, B.H. (author)
Applications of the wind farm layout optimisation problem focus on optimally positioning a certain number of turbines within a wind farm so that annual energy production (AEP) is maximised. This study addresses an earlier stage in the wind farm development process. Instead of optimising the individual positions of a certain number of turbines of...
article 2020
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Wagenaar, J.W. (author)
article 2020
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Koodly Ravishankara, A. (author), Bakhmet, I. (author), Ozdemir, H. (author)
Surface degradation of the wind turbine blades lead to a reduction while on the other hand blade add-ons like, vortex generators, lead to an increase in the aerodynamic performance. Within this study, both the reduction due to leading edge roughness and the increase due to vortex generators in the aerodynamic performance are quantified...
article 2020
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Boorsma, K. (author), Wenz, F. (author), Lindenberg, K. (author), Aman, M. (author), Kloosterman, M. (author)
The computational effort for wind turbine design load calculations is more extreme than it is for other applications (e.g., aerospace), which necessitates the use of efficient but low-fidelity models. Traditionally the blade element momentum (BEM) method is used to resolve the rotor aerodynamic loads for this purpose, as this method is fast and...
article 2020
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Sperna Weiland, N.H. (author), Traversari, A.A.L. (author), Sinnige, J.S. (author), van Someren Greve, F. (author), Timmermans, A. (author), Spijkerman, I.J.B. (author), Ganzevoort, W. (author), Hollmann, M.W. (author)
dDuring the severe acute respiratory syndrome coronavirus-1 epidemic, healthcare workers involved in aerosol-generating procedures, such as tracheal intubation or bronchoalveolar lavage, were at increased risk of becoming infected.1 For the current coronavirus disease 2019 pandemic caused by severe acute respiratory syndrome coronavirus-2 (SARS...
article 2020
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Kanev, S.K. (author), Bot, E. (author), Giles, J. (author)
Active wake control (AWC) is a strategy for operating wind farms in such a way as to reduce the wake effects on the wind turbines, potentially increasing the overall power production. There are two concepts to AWC: induction control and wake redirection. The former strategy boils down to down-regulating the upstream turbines in order to increase...
article 2020
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Schepers, J.G. (author), Schreck, S.J. (author)
This article reviews the aerodynamic measurement programs on wind turbines that have been performed in the last decades. It is largely based on results from four projects carried out under auspices of the international Energy Agency (IEA), which are denoted as IEA Tasks 14, 18, 20, and 29. The aim of these projects was to collect and analyze...
article 2019
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Adema, N. (author), Kloosterman, M. (author), Schepers, J.G. (author)
Dynamic stall phenomena bring risk for negative damping and instability in wind turbine blades. It is crucial to model these phenomena accurately to reduce inaccuracies in predicting design driving (fatigue) loads. Inaccuracies in current dynamic stall models may be due to the facts that they are not properly designed for high angles of attack,...
article 2019
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Verriet, J. (author), Sleuters, J. (author), Doornbos, R. (author)
article 2018
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Hendriks, M. (author), Basten, A.A. (author)
article 2018
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