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Dynamics of the Pitch-able VAWT: A Study of the Dynamics of the Vertical Axis Wind Turbine with Individual Pitch Control

LeBlanc, B.P. (author)

Society is finally entering a new age of renewable energy development. For the first time it is truly conceivable to power a vast majority of global energy use with a combination of wind, solar, and other forms of low carbon, renewable power. The rise of electrification and so called ”Power to X”, where renewable energy is used to create other...

doctoral thesis 2024

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Computationally Aware Surrogate Models for the Hydrodynamic Response Characterization of Floating Spar-Type Offshore Wind Turbine

Ilardi, Davide (author), Kalikatzarakis, Miltiadis (author), Oneto, Luca (author), Collu, Maurizio (author), Coraddu, A. (author)

Due to increasing environmental concerns and global energy demand, the development of Floating Offshore Wind Turbines (FOWTs) is on the rise. FOWTs offer a promising solution to expand wind farm deployment into deeper waters with abundant wind resources. However, their harsh operating conditions and lower maturity level compared to fixed...

journal article 2024

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GRACE-FO radiation pressure modelling for accurate density and crosswind retrieval

Hladczuk, N.A. (author), van den IJssel, J.A.A. (author), Kodikara, T. (author), Siemes, C. (author), Visser, P.N.A.M. (author)

Uncertainties in radiation pressure modelling play a significant role in the thermospheric density and crosswind observations derived from the GRACE-FO accelerometer, especially during low solar activity. Under such conditions, the radiation pressure acceleration matches the magnitude of the aerodynamic acceleration along the track and...

journal article 2024

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Characteristics of ice-structure-soil interaction of an offshore wind turbine

Zou, Pengxu (author), Bricker, J.D. (author), Fujisaki-Manome, Ayumi (author), Garcia, Fernando E. (author)

This research investigates the dynamic response of offshore wind turbine (OWT) systems subject to ice-structure-soil interaction (ISSI). To simulate the behavior of level ice sheets, a coupled approach involving the cohesive element method (CEM) and the finite element method (FEM) is applied. For soil-structure interaction (SSI), the Mohr...

journal article 2024

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High-resolution turbofan intake flow characterization by automated stereoscopic-PIV in an industrial wind tunnel environment

Ujjaini Kempaiah, K. (author), Piovesan, Tommaso (author), Zachos, Pavlos K. (author), Michaelis, Dirk (author), Gebbink, Roy (author), van Rooijen, Bart (author), Prieto, Daniel Gil (author), MacManus, David (author), Sciacchitano, A. (author), Sheaf, Christopher (author)

Unsteady inlet flow distortion can influence the stability and performance of any propulsion system, in particular for more novel, short and slim intakes of future aero-engine configurations. As such, the requirement for measurement methods able to provide high spatial resolution data is important to aid the understanding of these flow fields...

journal article 2024

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Should we care about the level of detail in trees when running urban microscale simulations?

Fu, Runnan (author), Pađen, I. (author), Garcia Sanchez, C. (author)

Due to lack of information and long geometry generation times, tree geometries are usually oversimplified or even ignored in Computational Fluid Dynamic (CFD) simulations that predict wind and pollutant dispersion in urban areas. Nevertheless, trees are known to impact local wind patterns and air quality levels. Thus, in this paper we explore...

journal article 2024

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Contactless control of suspended loads for offshore installations: Proof of concept using magnetic interaction

Atzampou, P. (author), Meijers, P.C. (author), Tsouvalas, A. (author), Metrikine, A. (author)

Current offshore wind turbine installation and positioning methods require mechanical equipment attached on the lifted components and human intervention. The present paper studies the development of a contactless motion compensation technique by investigating a magnetically controlled pendulum. The technique involves the interaction of a...

journal article 2024

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Wind-solar technological, spatial and temporal complementarities in Europe: A portfolio approach

López Prol, Javier (author), de Llano Paz, Fernando (author), Calvo-Silvosa, Anxo (author), Pfenninger, Stefan (author), Staffell, Iain (author)

Climate change and geopolitical risks call for the rapid transformation of electricity systems worldwide, with Europe at the forefront. Wind and solar are the lowest cost, lowest risk, and cleanest energy sources, but their variability poses integration challenges. Combining both technologies and integrating regions with dissimilar generation...

journal article 2024

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Maximizing wind farm power output with the helix approach: Experimental validation and wake analysis using tomographic particle image velocimetry

van der Hoek, D.C. (author), Van den Abbeele, B.H.L. (author), Ferreira, Carlos (author), van Wingerden, J.W. (author)

Wind farm control can play a key role in reducing the negative impact of wakes on wind turbine power production. The helix approach is a recent innovation in the field of wind farm control, which employs individual blade pitch control to induce a helical velocity profile in a wind turbine wake. This forced meandering of the wake has turned...

journal article 2024

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Settlement success of European flat oyster (Ostrea edulis) on different types of hard substrate to support reef development in offshore wind farms

ter Hofstede, R. (author), Witte, Sterre (author), Kamermans, Pauline (author), van Koningsveld, M. (author), Tonk, Linda (author)

The native European flat oyster (Ostrea edulis) is an ecosystem engineer providing important ecosystem services, but became nearly extinct from the North Sea due to diseases and overfishing. There's a growing interest to restore these oyster reefs for their valuable contribution in re-establishing a rich ecosystem in the North Sea. In order...

journal article 2024

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Synchronized optimization of wind farm start-stop and yaw control based on 3D wake model

Mr. Wang, Q. (author), Xu, Tangjie (author), von Terzi, D.A. (author), Xia, Wei (author), Wang, Zhenhai (author), Zhang, Haoran (author)

In existing wind farms, the overall power output can be increased through yaw control. However, the cooperative control of start/stop, yaw and turbines positions is often overlooked, leading to wake superposition to downstream wind turbines and suboptimal power output. This paper proposes a synchronized optimized method that considers start...

journal article 2024

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How do residents perceive energy-producing kites?: Comparing the community acceptance of an airborne wind energy system and a wind farm in Germany

Schmidt, H.S. (author), Leschinger, Valentin (author), Müller, Florian J.Y. (author), de Vries, G. (author), Renes, Reint Jan (author), Schmehl, R. (author), Hübner, Gundula (author)

Airborne wind energy (AWE) is an emerging renewable energy technology that uses kites to harvest winds at higher altitudes than wind turbines. Understanding how residents experience a local AWE system (AWES) is important as the technology approaches commercialization. Such knowledge can help adjust the design and deployment of an AWES to fit...

journal article 2024

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Frequency-domain framework for floating installation of wind-turbine towers

Fidalgo Domingos, D.A. (author), Wellens, P.R. (author), van Wingerden, J.W. (author)

As a result of more stable wind conditions and the depletion of near-shore locations, wind farms are moving farther offshore into deeper waters, challenging the current limits of offshore heavy-lift operations. This paper presents and verifies a novel frequency-domain framework to perform extensive site-specific analysis, of floating...

journal article 2024

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Optimal chartering decisions for vessel fleet to support offshore wind farm maintenance operations

Li, M. (author), Bijvoet, Bas (author), Wu, Kangjie (author), Jiang, X. (author), Negenborn, R.R. (author)

Offshore wind energy is expected to be the most significant source of future electricity supply in Europe. Offshore wind farms are located far from the shores, requiring a fleet of various types of vessels to access sites when maintaining offshore wind turbines. The employment of the vessels is costly, accounting for the majority of the total...

journal article 2024

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Autonomous Sensor System for Low-Capacity Wind Turbine Blade Vibration Measurement

Muxica, Diego (author), Rivera, Sebastian (author), Orchard, Marcos E. (author), Ahumada, Constanza (author), Jaramillo, Francisco (author), Bravo, Felipe (author), Gutiérrez, José M. (author), Astroza, Rodrigo (author)

This paper presents the design, implementation, and validation of an on-blade sensor system for remote vibration measurement for low-capacity wind turbines. The autonomous sensor system was deployed on three wind turbines, with one of them operating in harsh weather conditions in the far south of Chile. The system recorded the acceleration...

journal article 2024

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The effective velocity model: An improved approach to velocity sampling in actuator line models

Muscari, C. (author), Schito, Paolo (author), Viré, A.C. (author), Zasso, Alberto (author), van Wingerden, J.W. (author)

Actuator line modeling of wind turbines requires the definition of a free-stream velocity in a computational mesh and a regularization kernel to project the computed body forces onto the domain. Both choices strongly influence the results. In this work, a novel velocity sampling method—the so-called effective velocity model (EVM)—is...

journal article 2024

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Buckling failure analysis of storage tanks under the synergistic effects of fire and wind loads

Chen, Chao (author), Chen, Hang (author), Mo, Li (author), Xiao, Shenbin (author), Li, Changjun (author), Yang, M. (author), Reniers, G.L.L.M.E. (author)

Fire-induced domino effect is one of the main threats to hazardous material storage tanks, and many attempts have been conducted to assess the vulnerability of storage tanks exposed to fire to evaluate domino effect risk. However, past research ignored the influence of wind load on the thermal buckling behavior of storage tanks exposed to...

journal article 2024

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Underwater noise from vibratory pile driving with non-linear frictional pile–soil interaction

Molenkamp, T. (author), Tsetas, A. (author), Tsouvalas, A. (author), Metrikine, A. (author)

Vibratory offshore pile driving offers a potential solution for reducing the underwater noise generated during the installation of foundation piles compared to using impact hammers. Existing noise prediction models are specifically tailored to impact pile driving scenarios. This paper introduces a novel methodology for underwater noise...

journal article 2024

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Analysis of the Boundary Layer on a Highly Flexible Wing Based on Infrared Thermography Measurements

Mertens, C. (author), Grille Guerra, A. (author), van Oudheusden, B.W. (author), Fehrs, Michael (author), Ritter, Markus R. (author)

The effects of the wing skin distortion on the boundary layer of a highly flexible wing are analyzed in a wind tunnel experiment using infrared thermography measurements. Considerable differences in the boundary layer flow are observed when comparing the sections of the wing near the ribs, where the design shape of the wing is preserved, and...

book chapter 2024

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Performance analysis of an idealized Darrieus–Savonius combined vertical axis wind turbine

Pan, J. (author), Ferreira, Carlos (author), van Zuijlen, A.H. (author)

To investigate the effect of force distributions of each turbine component on the power performance of the Darrieus–Savonius combined vertical axis wind turbine (hybrid VAWT), the hybrid VAWT is modeled as idealized turbine under various force distributions. The goal of idealization is to simplify the intricate interactions between the...

journal article 2024