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Nouri, Amir (author), Zinatizadeh, Ali Akbar (author), Zinadini, Sirus (author), van Loosdrecht, Mark C.M. (author)This study focuses on the development of an air-lift bio-electrochemical reactor (ALBER) with a continuous feeding regime. The objective is to enhance nitrogen removal from synthetic wastewater with a low carbon-to-nitrogen (C/N) ratio. The chemical oxygen demand (COD) and total nitrogen (TN) of the influent wastewater were 500 and 200 mg/L,...journal article 2024
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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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- Ruland, Oscar (author), Mkhoyan, T. (author), De Breuker, R. (author), Wang, Xuerui (author) journal article 2023
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Cayon, O. (author), Gaunaa, Mac (author), Schmehl, R. (author)Soft-wing kites for airborne wind-energy harvesting function as flying tensile membrane structures, each of whose shape depends on the aerodynamic load distribution and vice versa. The strong two-way coupling between shape and loading poses a complex fluid-structure interaction problem. Since computational models for such problems do not yet...journal article 2023
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Puiman, L. (author), Almeida Benalcazar, E.F. (author), Picioreanu, C. (author), Noorman, H.J. (author), Haringa, C. (author)In large-scale syngas fermentation, strong gradients in dissolved gas (CO, H<sub>2</sub>) concentrations are very likely to occur due to locally varying mass transfer and convection rates. Using Euler-Lagrangian CFD simulations, we analyzed these gradients in an industrial-scale external-loop gas-lift reactor (EL-GLR) for a wide range of...journal article 2023
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Reuchlin, S.P.A. (author), Joshi, R. (author), Schmehl, R. (author)The majority of remote locations not connected to the main electricity grid rely on diesel generators to provide electrical power. High fuel transportation costs and significant carbon emissions have motivated the development and installation of hybrid power systems using renewable energy such these locations. Because wind and solar energy is...journal article 2023
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Varriale, Carmine (author)The objective of the present dissertation is to show how redundant control surfaces can be exploited to shape an aircraft dynamic behavior and obtain desired flight mechanics performance. This is achieved by introducing novel approaches and methods for flight mechanics and control, mainly revolving around original implementations of traditional...doctoral thesis 2022
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Moya-Esteban, A. (author), van der Kooij, H. (author), Sartori, M. (author)Low back joint compression forces have been linked to the development of chronic back pain. Back-support exoskeletons controllers based on low back compression force estimates could potentially reduce the incidence of chronic pain. However, progress has been hampered by the lack of robust and accurate methods for compression force estimation....journal article 2022
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Mikail, Davey (author), Teunis, Menko (author), Grammatikopoulos, A. (author)The increasing demand for decarbonisation to achieve the green transition leads to a higher required capacity for all types of renewable energy farms, including offshore wind. Due to the large required spacing between turbines to maximise their efficiency, their individual size is constantly increasing. A direct consequence for heavy lift and...conference paper 2022
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Sanjeevi, Sathish K.P. (author), Dietiker, Jean F. (author), Padding, J.T. (author)Detailed simulations of flow around various prolate spheroids are performed using multi-relaxation time lattice Boltzmann method (LBM). The simulations are performed in the Reynolds numbers range 0.1≤Re≤2000 at different incident angles 0<sup>∘</sup>≤ϕ≤90<sup>∘</sup> for various prolate spheroids of aspect ratios 1≤λ≤8. The Re is based on the...journal article 2022
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Ji, X. (author), van Ginkel, H.J. (author), Hu, D. (author), Schmidt-Ott, A. (author), van Zeijl, H.W. (author), Vollebregt, S. (author), Zhang, Kouchi (author)Advances in semiconductor device manufacturing technologies are enabled by the development and application of novel materials. Especially one class of materials, nanoporous films, became building blocks for a broad range of applications, such as gas sensors and interconnects. Therefore, a versatile fabrication technology is needed to...conference paper 2022
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de Jong, Chris P.L. (author), Remes, B.D.W. (author), Hwang, S. (author), de Wagter, C. (author)Increasing endurance is a major challenge for battery-powered aerial vehicles. A method is presented which makes use of an updraft around obstacles to decrease the power consumption of a fixed-wing unmanned aerial vehicle. A soaring flight controller has been developed that can autonomously soar while the unmanned aerial vehicle keeps its...journal article 2021
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Ye, J. (author), Roy, S. (author), Godjevac, Milinko (author), Baldi, S. (author)Position control for heavy-lift construction vessels is crucial for safe operation during offshore construction. During the various phases of a typical offshore construction assignment, considerable changes in the dynamics of the crane-vessel system occur. Operational hazard was reported if such interchanging dynamics are not properly handled...journal article 2021
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Varriale, Carmine (author), Voskuijl, M. (author)This paper presents a Control Allocation formulation aimed at altering the dynamic transient response of an aircraft by exclusive means of the aerodynamic effectiveness of its control effectors. This is done, for a given Flight Control System architecture and, optionally, closed-loop performance, by exploiting the concept of Control Center of...journal article 2021
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Szynkowska-Jóźwik, Małgorzata I. (author), Maćkiewicz, Elżbieta (author), Rogowski, Jacek (author), Gajek, Magdalena (author), Pawlaczyk, Aleksandra (author), de Puit, M. (author), Parczewski, Andrzej (author)Time-of-flight secondary ion mass spectrometry (TOF-SIMS) was applied to detect traces of amphetamine on fingerprints. In the present study, three different lift tapes and latent powder fingerprints were tested. The obtained results show that it is possible to identify traces of a drug as well as its distribution over the tested fingerprint...journal article 2021
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Mema, I. (author), Padding, J.T. (author)Having proper correlations for hydrodynamic forces is essential for successful CFD-DEM simulations of a fluidized bed. For spherical particles in a fluidized bed, efficient correlations for predicting the drag force, including the crowding effect caused by surrounding particles, are already available and well tested. However, for elongated...journal article 2021
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Ren, Zhengru (author), Verma, Amrit Shankar (author), Ataei, Behfar (author), Halse, Karl Henning (author), Hildre, Hans Petter (author)Being one of the most commonly used offshore operations, offshore lifting operations become increasingly challenging due to the gradually growing size and weight of payloads. The research on automatic control in lifting operations, e.g., anti-swing control and heave compensation, only considers simple-shaped payloads, such as lumped-mass...journal article 2021
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Ye, J. (author), Reppa, V. (author), Godjevac, M. (author), Negenborn, R.R. (author)Offshore platforms and windmills are constructed by assembling huge mechanical structures transported by heavy lift vessels. The construction process comprises two interconnected operations, the dynamic positioning (DP) of the vessel and the lifting of heavy loads. The DP system is commonly designed and tuned for the case that there is no...journal article 2021
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Ye, J. (author)Autonomous vessels have developed into a popular research area in both industry and academia. The application of autonomy in offshore and coastal engineering could offer a safe and efficient solution to offshore transportation and operation. However, the state of the art in research has focused on waterborne transportation. Very limited research...doctoral thesis 2020
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de Wringer, Sam (author), Varriale, Carmine (author), Oliviero, F. (author)A unified approach to aircraft mission performance assessment is presented in this work. It provides a detailed and flexible formulation to simulate a complete commercial aviation mission. Based on optimal control theory, with consistent injection of rules and procedures typical of aeronautical operations, it relies on generalized...journal article 2020