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Ali, W. (author)Deep-sea mining Industry and academia are presently investigating the potential of deep-seamining for valuable resources such as poly-metallic nodules. Nevertheless, the process of manoeuvring, excavating, and processing these resources poses a threat to the deep-sea environment through the generation of plumes of suspended fine-grained solids,...doctoral thesis 2024
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Owen, C.C. (author)The imminence of anthropogenic climate change has motivated a global energy transition towards sustainable power generation. Offshore wind—an important contributor to the energy transition—is expanding, not only in turbine size and number of installations, but also into regions with harsher environmental conditions. One of those conditions in...doctoral thesis 2024
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Alfaraj, Ali (author)Imaging and inversion with seismic data recorded with sources and receivers at the surface are powerful tools to infer knowledge about the subsurface. However, creating an image with seismic data is unfortunately not as easy as taking a picture with a smartphone. The estimated subsurface models in many situations are far from ideal due to the...doctoral thesis 2024
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Dash, T.K. (author), Driessen, J.N. (author), Krasnov, O.A. (author), Yarovoy, Alexander (author)The problem of the limited accuracy of precipitation Doppler spectrum moments estimation measured by fast azimuthally scanning weather radars is addressed. A novel approach for the Doppler moment estimation based on maximum likelihood estimation is proposed. A simplified semianalytical parametric model for the precipitation power spectral...journal article 2024
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Mares Nasarre, P. (author), van Gent, M.R.A. (author), Morales Napoles, O. (author)Rising sea levels caused by climate change are increasing the risk of overtopping on coastal structures. Moreover, there is a growing societal concern about the visual impact of these structures, which leads to the lowering of their crest freeboards. In previous studies, safety during overtopping events was assessed considering the...journal article 2024
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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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Shirmohammadi, F. (author), Draganov, D.S. (author), Ghose, R. (author)Seismic interferometry (SI) retrieves the Green function between two receiver locations using their recordings from a boundary of sources. When using sources and receivers only at the surface, the virtual-source gathers retrieved by SI contain pseudo-physical reflections as well as ghost (non-physical) reflections. These ghost reflections are...journal article 2024
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Altiparmaki, O. (author), Amraoui, Samira (author), Kleinherenbrink, M. (author), Moreau, Thomas (author), Maraldi, Claire (author), Visser, P.N.A.M. (author), Naeije, M.C. (author)This study presents the first azimuth cutoff analysis in Synthetic Aperture Radar (SAR) altimetry, aiming to assess its applicability in characterizing sea-state dynamics. In SAR imaging, the azimuth cutoff serves as a proxy for the shortest waves, in terms of wavelength, that can be detected by the satellite under certain wind and wave...journal article 2024
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Sudha, A. (author), Rohde, M. (author)The lattice-Boltzmann method (LBM) is becoming increasingly popular for simulating multi-phase flows on the microscale because of its advantages in terms of computational efficiency. Many applications of the method are restricted to relatively simple geometries. When a more complex geometry is considered—circular and inclined microchannels...journal article 2024
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Biagini, D. (author), Pascoe, J.A. (author), Alderliesten, R.C. (author)Although several studies have been performed, the compression after impact (CAI) failure of CFRP is still not entirely understood. It is still unclear what sequence of events determines the onset of failure in CAI tests and how the different damage modes are involved in this process. To experimentally investigate this matter, the present work...journal article 2023
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Hendrikse, H. (author), Owen, C.C. (author)For offshore wind turbines on monopile or jacket foundations without ice cones, one of the relevant design load cases is that of ice floes or level ice crushing against the structure resulting in ice-induced vibrations. In relation to that design load case, a relevant question is which ice strength coefficient to use in the crushing formula in...conference paper 2023
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Cheng, H. (author), Weemstra, C. (author), Hendriks, M.A.N. (author), Yang, Y. (author)Coda wave interferometry (CWI) holds promise as a technique for concrete stress monitoring. This is because the coda, which consists of multiply scattered arrivals, is the result of propagation through the medium over large distances. As such, it is sensitive to both minute structural changes and small velocity changes in that medium....journal article 2023
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Saitta, Simone (author), Maga, L.M. (author), Armour, Chloe (author), Votta, Emiliano (author), O'Regan, Declan P. (author), Salmasi, M. Yousuf (author), Athanasiou, Thanos (author), Weinsaft, Jonathan W. (author), Xu, Xiao Yun (author), Pirola, S. (author), Redaelli, Alberto (author)Background and Objective: Numerical simulations of blood flow are a valuable tool to investigate the pathophysiology of ascending thoratic aortic aneurysms (ATAA). To accurately reproduce in vivo hemodynamics, computational fluid dynamics (CFD) models must employ realistic inflow boundary conditions (BCs). However, the limited availability of...journal article 2023
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Owen, C.C. (author), Hammer, T.C. (author), Hendrikse, H. (author)A series of ice penetration tests with a rigid structure, with controlled oscillation, and with a single-degree-of-freedom structure were performed to investigate the peak load-velocity dependence for ethanol-doped model ice during a test campaign at the Aalto Ice and Wave Tank. For the rigid structure and controlled-oscillation tests, the...journal article 2023
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D’Acquisto, M. (author), Herman, M. W. (author), Riva, R.E.M. (author), Govers, R. (author)Greater landward velocities were recorded after six megathrust earthquakes in subduction zone regions adjacent to the ruptured portion. Previous explanations invoked either increased slip deficit accumulation or plate bending during postseismic relaxation, with different implications for seismic hazard. We investigate whether bending can be...journal article 2023
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Yuan, S. (author), Zhu, S. (author), Fioranelli, F. (author), Yarovoy, Alexander (author)The problem of estimating the 3D ego-motion velocity using multi-channel FMCW radar sensors has been studied. For the first time, the problem of ego-motion estimation is treated using radar raw signals. A robust algorithm using multi-channel FMCW radar sensors to instantly determine the complete 3D motion state of the ego-vehicle (i.e.,...journal article 2023
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Hladczuk, N.A. (author), Brown, Anthony (author), Bakker, J. (author), Benson, K. (author), Janßen, Katja (author), Jordan, Stefan (author), Löffler, W. (author), Marchal, Olivier (author), Sarro, Luis Manuel (author), Aerts, Conny (author), David, Marc (author), Gomez, A. (author), Helmer, A. (author), Holland, G. (author), Liao, S. (author), Marcos, J. (author), Mor, Roger (author), Morris, D. (author), Murphy, C. P. (author), Nagy, Z. (author), Weiler, M. (author), Wevers, T. (author), Zhao, He (author)Context. We present the third data release of the European Space Agency's Gaia mission, Gaia DR3. This release includes a large variety of new data products, notably a much expanded radial velocity survey and a very extensive astrophysical characterisation of Gaia sources. Aims. We outline the content and the properties of Gaia DR3, providing...journal article 2023
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Singh, Avishreshth (author), Biligiri, Krishna Prapoorna (author), Sampath, Prasanna Venkatesh (author)The use of nondestructive ultrasonic pulse velocity (UPV) testing to assess the hardened properties of pervious concrete (PC) mixtures is an emerging research area. Further, UPV has been successfully used to determine the effective flow resistivity (EFR) of asphalt concrete and cement concrete pavements. However, no research studies have...journal article 2023
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Giagnorio, Mattia (author), Tanis, M.B. (author), Hélix-Nielsen, Claus (author), Aschmoneit, Fynn Jerome (author)In forward osmosis, defects on the selective active layer and changes in the porous structure of the support layer can be detrimental factors affecting the membrane performance. This study focuses on the impacts of (i) the possible presence of defects and (ii) the changes in pore structures on the water flux and membrane selectivity via...journal article 2023
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de Vries, J.W. (author), Sun, M. (author), de Groot, N.M.S. (author), Hendriks, R.C. (author)Estimating tissue conductivity parameters from electrograms (EGMs) could be an important tool for diagnosing and treating heart rhythm disorders such as atrial fibrillation (AF). One of these parameters is the fibre direction, often assumed to be known in conductivity estimation methods. In this paper, a novel method to estimate the fibre...conference paper 2023