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Xu, P. (author)
Efficient and affordable solar energy is essential for reducing greenhouse gas emissions and achieving climate neutrality. Large-scale offshore floating photovoltaics (LOFPV) provide creative opportunities for clean and cost-effective renewable energy production close to populated areas. They are composed of solar modules, a membrane platform,...
doctoral thesis 2022
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Chang, X. (author)
In reality, the interaction between surface wave-current flow and numerous kinds of man-made maritime structures is local but embedded in a domain with the size of a sea. Detailed simulations of the vast domain are computationally unfeasible. Therefore, articial boundaries are introduced to truncate the large domain so as to obtain a small...
doctoral thesis 2021
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ten Eikelder, M.F.P. (author)
Numerical procedures and simulation techniques in science and engineering have progressed significantly during the last decades. The finite element method plays an important role in this development and has gained popularity in many fields including fluid mechanics. A recent finite element solution strategy is isogeometric analysis. Isogeometric...
doctoral thesis 2020
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Jacobi, G. (author)
As soon a ship operates at high forward speeds its weight is pre-dominantly supported by hydrodynamic, rather than hydrostatic forces. Small changes in the dynamic pressure distribution on the ship hull can have a significant influence on the ship’s running attitude in calm water, but also on its seakeeping performance. In order to further...
doctoral thesis 2020
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van der Kolk, N.J. (author)
doctoral thesis 2020
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de Wilde, J.J. (author)
The objective of the research was the measurement of the VIV lift force coefficient in-phase with velocity Clv and in-phase with acceleration Cla for a pipe section with large length over diameter ratio of L/D ~18 at high Reynolds numbers of Re > 1E4. The coefficients are measured for a forced oscillation pipe in a steady flow and can be...
doctoral thesis 2020
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Bordogna, G. (author)
The shipping industry is currently under pressure to reduce its pollutant emissions and, thus, to alleviate its negative impact on the environment and human health. With this aim, in the last years, the International Maritime Organization issued significant measures to improve the energy efficiency of ships (see the Energy Efficiency Design...
doctoral thesis 2020
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Peters, O.A.J. (author)
Dry transporting large heavy floating structures has been an important development in the innovative history of Heavy Marine Transport. This is done by carrying these type of cargoes on the deck of Heavy Transport Vessels. Loading and discharge is preformed by submerging the transport vessel, and positioning the cargo above the deck using tugger...
doctoral thesis 2019
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Bonci, M. (author)
Broaching-to is a highly complex, non-linear dynamic instability event that several vessels might face when sailing in the same direction of the waves, for example when returning to port during a storm. This condition is referred to as following sea. Vessels such high-speed craft but also patrol and rescue boats, fishing trawlers or small...
doctoral thesis 2019
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Bogaert, H (author)
doctoral thesis 2018
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Kapsenberg, G.K. (author)
Slamming of ships is a phenomenon characterized by a high wave load of short duration. Usually the ships structure responds in a vibratory manner on this load; the response can be either a local or a global vibration mode or it can be in both modes together. These short duration loads are caused by large amplitude motions, even to the point that...
doctoral thesis 2018
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Choi, B. (author)
The publication of the Energy Efficiency Design Index (EEDI) by the International Maritime Organization (IMO) has recently stimulated the accurate assessment of actual sea performance of ships, which is evaluated as added resistance in waves. However, a satisfactory consensus on the evaluation method has not yet been reached owing to uncertainty...
doctoral thesis 2018
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Renzsch, H.F. (author)
While historically sailmaking and saildesign were considered as arts, in the 20th century, mainly from the 1980s onwards, engineering sciences have started to play an important role. Two fields are of particular interest: structural and fluid mechanics. Initially, the sails were tested in the wind tunnel, aggregate flow forces measured and the...
doctoral thesis 2018
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Naaijen, P. (author)
With many operations at sea carried out by ships or or other floating vessels, risks are involved because of the waves and resulting motions of the ships. Examples are the landing of helicopters on ships, transferring crew from a ship to a wind turbine, or working on the deck of an anchor handling tug. It is common practice to assess the...
doctoral thesis 2017
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Rijkens, A.A.K. (author)
doctoral thesis 2016
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Duz, B. (author)
The PhD study focused on two topics. The first topic was energy dissipation in wave propagation. The wave dissipation can be caused by physical and/or numerical phenomena, such as the free surface treatment, physical viscosity and artificial viscosity due to discretization of the momentum equations. Among these the free surface treatment is an...
doctoral thesis 2015
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Den Besten, J.H. (author)
Crew transfers, surveillance duties and {security, rescue, interception} operations at sea typically require high-speed craft. Aluminium is quite often selected as hull structure material because of its weight save potential in comparison to steel. The fatigue strength, however, may become a point of concern because of the decreased Young’s...
doctoral thesis 2015
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Boehm, C. (author)
One of the most important tools in today's sailing yacht design is the Velocity Prediction Program (VPP). VPPs calculate boat speed from the equilibrium of aero- and hydrodynamic flow forces. Consequently their accuracy is linked to the accuracy of the aero- and hydrodynamic data used to represent a yacht. These data are usually derived from...
doctoral thesis 2014
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Van Deyzen, A.F.J. (author)
The demand to sail at high forward speeds in both calm water and in a seaway remains high. For various patrol, search and rescue or military operations attaining high forward speeds is essential. In head and bow quartering seas, the main factor for voluntary speed reduction is the occurrence of large vertical peak accelerations. The occurrence...
doctoral thesis 2014
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Schmied, S.A. (author)
The aim of the research presented in this work was to investigate the novel idea to produce continuous breaking waves, whereby a pressure source was rotated within an annular wave pool. The concept was that the pressure source generates non-breaking waves that propagate inward to the inner ring of the annulus, where a sloping bathymetry (beach)...
doctoral thesis 2014
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