Searched for: subject%3A%22Flow%255C+velocity%22
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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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Giordano, Fabrizio (author)
In this study, plume experiments were conducted to mimic the thermodynamic conditions on Saturn's moon, Enceladus. The icy moon subsurface ocean and cracks in the surface have been simulated by using a liquid water reservoir and a narrow channel, while the low-pressure environment at Enceladus’ surface was achieved with a vacuum chamber. We...
master thesis 2023
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van Batenburg, Tobias (author)
Groynes in the Lower Elbe estuary in Germany are subject to attack from overflowing long-period primary ship-induced waves. Damage can occur on the crest and lee side of the structure due to the high turbulent overflowing flow velocities. An actual design tool for groynes exposed to overflowing primary ship waves is not yet present. Therefore,...
master thesis 2023
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Aguilera Chaves, Mónica (author)
Breakwaters are built in coastal zones to alter sediment transport, or protect threatened habitats and port facilities. The rising sea level is causing more water to overtop these structures. Increasing amounts of overtopping discharge can compromise the security of people, or equipment standing on the crest of breakwaters. The overtopping flow...
master thesis 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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Brouwers, Steven (author)
Due to river training in the past centuries, the bed level of the Waal started and is still decreasing by several centimetres a year. Erosion of the riverbed causes problems for objects underneath the riverbed like cables, pipelines and foundations of structures. Furthermore, some parts of the river are eroding at a higher velocity compared to...
master thesis 2022
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Schoutens, Ken (author), Stoorvogel, Marte (author), van den Berg, M. (author), van den Hoven, Kim (author), Bouma, Tjeerd J. (author), Aarninkhof, S.G.J. (author), Herman, P.M.J. (author), van Loon-Steensma, Jantsje M. (author), Meire, Patrick (author)
Nature-based strategies, such as wave attenuation by tidal marshes, are increasingly proposed as a complement to mitigate the risks of failure of engineered flood defense structures such as levees. However, recent analysis of historic coastal storms revealed smaller dike breach dimensions if there were natural, high tidal marshes in front of...
journal article 2022
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Chen, W. (author), Warmink, J.J. (author), van Gent, M.R.A. (author), Hulscher, S.J.M.H. (author)
The mean overtopping discharge and the overtopping flow parameters related to individual overtopping events are often used to characterize the wave overtopping processes at dikes. Roughness, berms and oblique waves have significant effects on the wave overtopping processes at dikes while these effects are still not fully understood. A 2DV...
journal article 2022
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Koosheh, Ali (author), Etemad-Shahidi, Amir (author), Cartwright, Nick (author), Tomlinson, Rodger (author), van Gent, M.R.A. (author)
Conventionally, allowable mean overtopping discharge is used as a design criterion for coastal structures. The mean overtopping discharge needs to be limited to ensure structural stability as well as the safety of people, vehicles, and properties behind the structure. Nowadays, limits for the maximum individual overtopping volumes are also...
review 2021
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Pakdaman Zangabad, Reza (author), Iskander-Rizk, Sophinese (author), van der Meulen, P.Q. (author), Meijlink, Bram (author), Kooiman, Klazina (author), Wang, Tianshi (author), van der Steen, A.F.W. (author), van Soest, Gijs (author)
Photoacoustic (PA) imaging can be used to monitor flowing blood inside the microvascular and capillary bed. Ultrasound speckle decorrelation based velocimetry imaging was previously shown to accurately estimate blood flow velocity in mouse brain (micro-)vasculature. Translating this method to photoacoustic imaging will allow simultaneous...
journal article 2021
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Hermann, I. (author), Uhrig, Tanja (author), Chacon-Caldera, Jorge (author), Akcakaya, Mehmet (author), Schad, Lothar R. (author), Weingärtner, S.D. (author)
Measurement of the bloodT1time using conventional myocardialT1mapping methods hasgained clinical significance in the context of extracellular volume (ECV) mapping and synthetichematocrit (Hct). However, its accuracy is potentially compromised by in-flow ofnon-inverted/non-saturated spins and in-flow of spins which are not partially saturated...
journal article 2020
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Altomare, Corrado (author), Gironella, Xavi (author), Suzuki, T. (author), Viccione, Giacomo (author), Saponieri, Alessandra (author)
Design criteria for coastal defenses exposed to wave overtopping are usually assessed by mean overtopping discharges and maximum individual overtopping volumes. However, it is often difficult to give clear and precise limits of tolerable overtopping for all kinds of layouts. A few studies analyzed the relationship between wave overtopping...
journal article 2020
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Suzuki, T. (author), Altomare, Corrado (author), Yasuda, Tomohiro (author), Verwaest, Toon (author)
Due to ongoing climate change, overtopping risk is increasing. In order to have effective countermeasures, it is useful to understand overtopping processes in details. In this study overtopping flow on a dike with gentle and shallow foreshores are investigated using a non-hydrostatic wave-flow model, SWASH (an acronym of Simulating WAves till...
journal article 2020
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Dereli, R.K. (author), van der Zee, F. (author), Ozturk, Izzet (author), van Lier, J.B. (author)
Whey, produced in large quantities during cheese production, is a rapidly fermentable high strength wastewater characterized by a high biodegradability and low alkalinity. In this study, a lab-scale cross-flow anaerobic membrane bioreactor was used to address the commonly experienced difficulties such as unstable reactor performance and...
journal article 2019
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Dornstädter, J. (author), Fabritius, A. (author), Heinemann, B. (author)
Internal erosion is one of the most frequent reasons of failure and deterioration of embankment dams. Internal erosion is controlled by construction properties (e.g. filter and drain design, grain and pore sizes) and hydrodynamic conditions within the dam. While construction properties are usually known, poor information is available on the...
conference paper 2017
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Siddiqui, A (author), Lehmann, S (author), Haaksman, V.A. (author), Ogier, J. (author), Schellenberg, Carsten (author), van Loosdrecht, Mark C.M. (author), Kruithof, J. C. (author), Vrouwenvelder, J.S. (author)
The porosity of spacer-filled feed channels influences the hydrodynamics of spiral-wound membrane systems and impacts the overall performance of the system. Therefore, an exact measurement and a detailed understanding of the impact of the feed channel porosity is required to understand and improve the hydrodynamics of spiral-wound membrane...
journal article 2017
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Riteco, J. (author)
A new flood risk approach for design and testing of primary and secondary flood defence structures in the Netherlands relies on the probability of loss of the water retaining capacity. Determining this probability for levees requires a better understanding of consequences of extreme conditions leading to failure, starting with a study of soil....
master thesis 2017
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Diplarakos, N. (author)
Laboratory measurements in the long wave flume of the Waterlab of TU Delft to capture and obtain simultaneous laboratory measurements of the main hydrodynamic parameters generated by the response of small model scale submerged permeable rubble mound trapezoidal breakwaters (SPBs) under wave action, focusing on the turbulent wave flow...
student report 2017
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Foortse, B. (author)
People all around the world live and work in low-lying areas. Low-lying areas have to be protected against high water levels in rivers and at sea by a water protection system (e.g. by dunes, dikes and barriers). Dikes are an important component within water protection systems. Generally, dikes are described as elongated naturally occurring or...
master thesis 2016
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Arets, K. (author)
Het doel van dit bachelor eindproject is een antwoord vinden op de vraag of het mogelijk is door middel van het IH-2VOF model resultaten gevonden in een stroomgoot te simuleren. Dit moet worden uitgezocht omdat door gebruik te maken van dit model de teen van een golfbreker beter, veiliger en eenvoudiger ontworpen kan worden. Het onderzoek...
bachelor thesis 2014
Searched for: subject%3A%22Flow%255C+velocity%22
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