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Boorsma, Reinder (author)The Wadden Sea is of great ecological importance. Key elements in the Wadden Sea are the extensive intertidal flats. These contain vast amounts of life, serve as feeding grounds for millions of birds, and provide ecosystem services such as coastal protection. It follows that it is important to be able to understand and predict how these vital...master thesis 2024
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Kouwenhoven, Tors (author)In the Nieuwe Waterweg an ongoing pilot takes place in one of the groyne areas. This pilot is a part of the “De Groene Poort” project. The idea for this project is to create intertidal areas by modifying and nourishing groyne areas. These artificially formed intertidal areas will create a new habitat for wildlife and attract different vegetation...master thesis 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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van der Zalm, Bart (author)This thesis is aimed at developing a fundamental understanding of the key physical mechanisms associated with swirling gas-liquid flow in a vertical pipe, in order to construct a mechanistic model for predicting the flow behaviour. The model is based on quasi-1D reasoning, in analogy to the classical models for gas-liquid flow without swirl. As...master thesis 2022
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van Os, Annemarie (author)This experimental study is about the bed-load transport over inlet sills of longitudinal training walls. The focus is on the flow structures around the inlet: the shape, the processes and the effect on sediment transport. Groynes have been replaced by longitudinal training walls in an 11-km long pilot project to optimize training of the river...master thesis 2020
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Toa, X. (author), Infante Ferreira, C.A. (author)This paper develops predicting models for NH<sub>3</sub> condensation in plate heat exchangers based on the experiments of flow patterns, heat transfer coefficients and frictional pressure drop previously reported by the authors. The aim is to provide design methods of compact plate condensers used in NH<sub>3</sub> systems, which are not...journal article 2020
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Toa, X. (author), Dahlgren, Elias (author), Leichsenring, Maaike (author), Infante Ferreira, C.A. (author)This paper investigates NH<sub>3</sub> condensation in a plate heat exchanger by visualizing the flow patterns and measuring heat transfer coefficients and frictional pressure drop. Visualization experiments were conducted between 20 and 100 kgm<sup>−2</sup>s<sup>−1</sup>. Full film flow takes place at large mass fluxes and intermediate mass...journal article 2020
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van Rooijen, Erik (author), Mosselman, E. (author), Sloff, C.J. (author), Uijttewaal, W.S.J. (author)Remarkable 3D flow structures occur at river confluences with small density differences due to differences in sediment concentration or temperature. We explain these by comparing numerical simulations for an idealized confluence with aerial photographs of several river confluences where color differences express the pattern of density...journal article 2020
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Leichsenring, Maaike (author)Ocean Thermal Energy Conversion (OTEC) uses the temperature difference between the surface and deep layers to generate electricity. The temperatures in the ocean hardly vary between day and night or between the seasons, which ensures a very constant energy production with OTEC. In order for OTEC to compete with the current forms of energy...master thesis 2019
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Maring, Sandra (author)Gasunie Transport Services (GTS) is the operator of the natural gas transmission network in the Netherlands. This network is an entry-exit system where entry and exit capacities can be booked by parties called shippers. Variations in usage lead to an enormous number of possible entry-exit combinations. GTS must be able to accommodate all...master thesis 2018
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Two-phase vertical downward flow in plate heat exchangers: Flow patterns and condensation mechanismsToa, X. (author), Nuijten, Menno P. (author), Infante Ferreira, C.A. (author)This study presents a literature review of work related to the two-phase flow patterns of vertical downward flow in plate heat exchangers with corrugated chevron plates. An understanding of these flow patterns is crucial for developing accurate models of plate heat exchangers functioning as condensers or absorbers. Flow pattern maps of the...journal article 2018
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de Jong, Maria (author)Large-scale changes in ocean conditions caused by installing and operating Ocean Thermal Energy Conversion (OTEC) have not been studied in depth. Conversely, the effect on an OTEC plant by oceanographic features are not researched in depth either. The aim of this research is to describe the natural patterns and variability of the ocean currents...master thesis 2017
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Nuijten, M.P. (author)Ocean thermal energy conversion (OTEC) is currently developed as a clean and sustainable energy technology for offshore application in tropical areas. The technology shows promising possibilities in combination with the Kalina cycle, a thermodynamic cycle for the generation of energy from low temperature difference heat sources using a working...master thesis 2015
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Elbaz, M.S.M. (author), Calkoen, E.E. (author), Westenberg, J.J.M. (author), Lelieveldt, B.P.F. (author), Roest, A.A.W. (author), Van der Geest, R.J. (author)Background LV diastolic vortex formation has been suggested to critically contribute to efficient blood pumping function, while altered vortex formation has been associated with LV pathologies. Therefore, quantitative characterization of vortex flow might provide a novel objective tool for evaluating LV function. The objectives of this study...journal article 2014
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Yu, B. (author)As one of the most fast growing species on earth, microalgae provides great potential to satisfy the ever increasing demand in food, energy and material in a sustainable way. The focus for this thesis work is on one of the most important bottle neck of microalgae harvest process: microalgae dewatering, by CFD modeling of the flow and...master thesis 2012
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- Schijndel, S.A.H. van. (author), Jagers, H.R.A. (author) report 2004
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Klabbers, M. (author)Sharks require a certain current condition in their basin for survival. The shark basin of Blijdorp zoo (Rotterdam) has been modeled in order to provide information regarding the currents in the basin and to optimize the physical environment for the sharks in the basinmaster thesis 1998
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- Groot, F. de (author) report 1996
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Ioannis, A.E. (author)Through a research project that has been carried out from the period of September 1990 until June 1991 in the Technical University of Delft, an attempt has been made with a model of a circular final settling tank, to: 1) work out flow patterns experimentally and with a computational model, in a clear water flow; in different conditions of inlet...master thesis 1991
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Langendoen, E.J. (author), Karelse, M. (author)Detailed measurements are presented of velocity and density fields in the entrance of a model harbor on a stratified tidal river. Three geometries of the harbor entrance were examined, (1) a harbor with its length axis perpendicular to the river and an entrance width of 1 m, (2) as (1) but with an entrance width of 0.5 m, and (3) a harbor with...report 1990