Searched for: mods_note_research_group_s:"Offshore%5C+and%5C+Dredging%5C+Engineering"
(1 - 20 of 1,234)

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Xiong, T. (author), Xinzhuo, Zhang (author), Miedema, S.A. (author), Chen, X. (author)
Slurry transport is a very important means of transporting solids through a pipeline. To improve the efficiency of slurry transport, especially in coarse particle transport, which is subject to problems such as strong resistance and easy blockage, more of the internal structure of the flow must be known. Empirical and analytical models are...
journal article 2019
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Miedema, S.A. (author)
In dredging, trenching, (deep sea) mining, drilling, tunnel boring and many other applications, sand, clay or rock has to be excavated. This book gives an overview of cutting theories. It starts with a generic model, which is valid for all types of soil (sand, clay and rock) after which the specifics of dry sand, water saturated sand, clay,...
book 2019
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Miedema, S.A. (author)
In dredging, production estimating is carried out mainly with analytical physical models of the different dredging processes. Slurry transport of settling slurries and cutting processes in sand, clay and rock are already covered in two other books by the author. Other processes like hopper sedimentation and erosion, water jet fluidization,...
book 2019
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Miedema, S.A. (author)
In dredging, trenching, (deep sea) mining, drilling, tunnel boring and many other applications, sand, clay or rock has to be excavated.The book covers horizontal transport of settling slurries (Newtonian slurries). Non-settling (non-Newtonian) slurries are not covered.
book 2019
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Goeree, J.C. (author)
Transporting large amounts of sand is mostly done hydraulically in dredging and mining. This method of sand transport is efficient and is used in land reclamation projects or extraction of oil from tar sands. Large pieces of equipment, such as pumps and pipe line systems, dredging vessels etc., are used enabling the sand water mixtures to be...
doctoral thesis 2018
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Bisschop, F. (author)
The safety level of a dike is expressed in terms of risk. Risk is defined as the product of the probability of inundation of a polder (after failure of a dike) and the expected damage (casualties, economic damage and damage to the infrastructure) caused by inundation. The rate of inundation determines the amount of casualties and depends heavily...
doctoral thesis 2018
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Talmon, A.M. (author), Sittoni, L. (author), Meshkati Shahmirzadi, E. (author), Hanssen, J.L.J. (author)
In beaching of tailings, sand and clays may segregate. In laminar flow this is due to shear settling. First implementations of shear settling in numerical flow models are seen, offering unprecedented potential to conduct tailings management studies. In order to validate numerical codes, reference materials are necessary. For laminar flow, there...
conference paper 2018
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Helmons, R.L.J. (author)
As a result of the worldwide population and welfare growth, the demand for energy (oil, gas and renewable sources) and raw materials increases. In the last decades, oil and gas are produced from more and more offshore sites and deeper waters. Besides energy, the demand for diverse metals and rare earth elements increases as well. These raw...
doctoral thesis 2017
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van Rijswick, R.J.A. (author)
Piston diaphragm pumps are used world-wide to transport abrasive and/or aggressive slurries against high discharge pressures in the mining, mineral processing and power industries. Limitation of excessive deformation of the diaphragm is of utmost importance for eliminating fatigue failures of the diaphragm and thereby obtaining a high...
doctoral thesis 2017
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Miedema, S.A. (author)
Different approaches are present in literature for slurry transport in inclined pipes. Most models assume that the socalled solids effect, the hydraulic gradient of the mixture minus the hydraulic gradient of the carrier liquid, has to be multiplied by the cosine of the inclination angle to a certain power. These powers vary from 0.25 to 1.7. In...
conference paper 2017
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Miedema, S.A. (author)
Most concentration distribution models are based on the advection diffusion equation for two-dimensional (2D) channel flow. These models may or may not incorporate hindered settling based on the cross-sectional averaged spatial volumetric concentration. These models also use a diffusivity based on the turbulent momentum diffusivity, sometimes...
conference paper 2017
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Keetels, G.H. (author), Goeree, J.C. (author), van Rhee, C. (author)
Sediment profiles in open channels are usually predicted by advection-diffusion models. Most basic forms consider the terminal settling velocity of a single particle in still clear water. Alternative forms account for hindered settling at higher concentrations. It is not known, however, how these modifications relate to mass and momentum...
journal article 2017
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Miedema, S.A. (author)
In dredging, trenching, (deep sea) mining, drilling, tunnel boring and many other applications, sand, clay or rock has to be excavated. After the soil has been excavated it is usually transported hydraulically as a slurry over a short (TSHD’s) or a long distance (CSD’s). Estimating the pressure losses and determining whether or not a bed will...
book 2016
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Lemmens, D. (author), Bisschop, F. (author), Visser, P.J. (author), van Rhee, C. (author)
Dikes constructed from sand generally have a sand core and clay layers on the slopes and the crest to protect the core against erosion. In extreme hydraulic conditions, several failure mechanisms can lead to destruction of the clay layers, exposing the sand core to water. When water overtops the dike and the protective cover of the land-side...
journal article 2016
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Miedema, S.A. (author)
Models for modeling slurry flow present difficulties on long lines with large pipe diameters and with broad graded sands or gravels. In order to get more insight into the slurry flow process, the Delft Head Loss & Limit Deposit Velocity Framework has been developed that integrates the 5 main flow regimes of slurry transport: fixed or...
journal article 2016
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de Haan, J.R. (author)
master thesis 2015
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Donga, R. (author)
master thesis 2015
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van Kampen, M.J. (author)
master thesis 2015
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Wang, S. (author)
master thesis 2015
document
Miedema, S.A. (author)
conference paper 2015
Searched for: mods_note_research_group_s:"Offshore%5C+and%5C+Dredging%5C+Engineering"
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