Searched for: mods_note_programme_s:"Offshore%5C+and%5C+Dredging%5C+Engineering"
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Ouwehand, Tim (author)
With a global growing demand of energy, more offshore wind farms are installed, further away and in deeper waters. Nowadays, offshore wind turbines are mostly installed by jack-up installation vessels. Most existing jack-up vessels have legs that are becoming too short for these water depths while offshore wind turbines are increasing in size...
master thesis 2020
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van der Blonk, Jacco (author)
The use of renewable energy sources like solar and wind energy for the generation of electricity are expected to increase in the coming decades. However, these sources are intermittent. Therefore Electrical Energy Storage (EES) systems are needed in the near future to assure a reliable electricity supply. These systems should also be able to...
master thesis 2020
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Doss, Arnav (author)
Floating breakwaters are applicable in several offshore applications to protect downstream structures from excessive wave loads and to reduce their motion response. This thesis investigates the impact of the leading platform, functionally a breakwater, on the RAOs and response of the platforms behind it in frequency domain. The structures are...
master thesis 2020
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Kalpakoglou, Alexandra (author)
Marine pipelines are often operated at high internal pressure and temperature. This loading condition results in the development of axial compressive forces that can cause the pipeline to buckle globally. Global buckling occurs when significant lateral motion is present in the pipeline and excessive feed-in occurs at that specific location,...
master thesis 2020
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van den Boogaard, Tim (author)
Transportation of slurries over a distance has always been one of the main objectives for the dredging industry. To accomplish a transport, centrifugal dredge pumps and mixture pipelines need to be perfectly intertwined. For the centrifugal dredge pump, available information is relatively scattered or confidential. The performance of a...
master thesis 2020
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Hoorn, Mark (author)
The goal of this thesis is to propose a stress state dependent ductile fracture criterion for shell elements that can be used for crash simulations for example collisions of ships with offshore structures. Fracture has been extensively researched for solid elements for finite element analysis in Bai & Wierzbicki [2009], among others. Shells...
master thesis 2020
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Glasbergen, Govert (author)
Wind turbines are growing in size and therefore their foundations, become larger as well. Additionally, they are placed in deeper waters. This results in the industry being at the limit of underwater noise levels generated by impact piling during the installation phase of monopiles. The most common installation method for monopiles is impact...
master thesis 2020
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van Duijn, Niels (author)
A QUAD lift is a new lifting method in which dual crane vessels combine their vessel capability to increase their offshore lift performance. The use of the Jumbo J-Class vessels in a QUAD lift creates the opportunity to increase the offshore lift capacity and to install structures with larger dimensions. When floating vessels are close to each...
master thesis 2020
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van den Berg, Maarten (author)
In current offshore wind turbine (WTG) tower installations, bolted flange connections are common. These connections are however reaching their limit due to the maximized size of the bolts. Also, bolted connections require the motions between the tower and foundation to be limited during installation, suggesting their workability of installation...
master thesis 2020
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Bastiaanssen, Piet (author)
The offshore wind energy industry has been developing rapidly due to the increasing demand for renewable energy. As a result, offshore wind turbines are increasing in mass and height and are installed at larger water depths and further away from shore. A floating vessel is not limited by water depth and soil conditions, but is sensitive to wave...
master thesis 2020
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Martens, Roland (author)
Ocean Thermal Energy Conversion (OTEC) has been heavily researched and developed over the last decade. However, no commercial scale for OTEC has been reached yet. OTEC is a clean and renewable source of energy which utilizes the seawater temperature difference between the upper and deep ocean layers to generate electricity. The heat exchangers...
master thesis 2020
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Wang, Xiuqi (author)
To realize sustainable development, offshore wind energy has been a highly valuable solution to meet the demand for renewable energy. Accompanied with the construction of the offshore wind turbines, cable casting and the following cable trenching process in the underwater condition are necessarily required. The research on the underwater sand...
master thesis 2020
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Bedón Vásquez, A.A. (author)
Turbidity currents are common in the waters around the world. They can be caused by earthquakes, collapsing slopes or other geological disturbances. However, turbidity currents can also be caused by deep sea mining activities. Deep sea mining is done with special mining vehicles. There are three main operations within this mining vehicle:...
master thesis 2020
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Eijgenraam, Koen (author)
This study is focused on the decommissioning of a jacket with a heavy lift vessel. During the transport the crane suspended jacket hanging in air can start swinging due to swell waves. This can result in undesired risks such as a collision between the jacket and the vessel. To prevent this undesired risks from occurring a solution must be sought...
master thesis 2020
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Kusters, Daan (author)
Deep sea minerals can offer an additional resource to meet the increasing mineral demands, instigated by population growth and technological advancements. Deep sea minerals exist in different forms at the bottom of the ocean. In this research, polymetallic or manganese nodules are the kind that are of interest. The nodules are 1 to 12 cm large...
master thesis 2020
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Bierhuizen, Luc (author)
Due to the presence of a monopile in a turbulent flow swirling vortices, known as horseshoe vortices, can form upstream of the structure near the cylinder-bed junction. Those vortices then travel downstream of the cylinder as they are being dragged along with the current. The horseshoe vortices can scoop up bed material surrounding the cylinder,...
master thesis 2020
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Sotiriadis, Daan (author)
The installation of subsea cables connecting offshore wind turbines to the grid is a delicate process. This is especially the case for the operation of connecting the second end of the cable to the turbine. The applied method of using a quadrant means that in the workability analyses, multibody dynamics, line dynamics and sea state dynamics need...
master thesis 2020
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Lie-A-Fat, Quin (author)
The Guyana-Suriname Basin off the coast of Suriname possesses large amounts of hydrocarbons. Suriname therefore wants to engage in developments in the shallow areas (0 - 30 m) offshore through their local oil company Staatsolie Maatschappij Suriname N.V. The expected discoveries are marginal and the soil consists of extremely low strength clays....
master thesis 2020
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Poppe, Richard (author)
The research focuses on sedimentation in reservoirs. Subjects include settling distribution in a reservoir, dredging and flushing of sediment in reservoirs, impact of sedimentation on reservoir performance and financial effects of long term sedimentation in reservoirs.
master thesis 2020
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van den Heuvel, Oscar (author)
Floating production units require to be permanently moored offshore. For shallow water field developments, typical designs include soft yoke mooring systems which is a single point mooring technology. Produced fluid is transported via a geostatic tower along the transfer hoses to the production unit. Single point mooring systems will weathervane...
master thesis 2020
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