P. de Vos
42 records found
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Understanding the failure behavior of thin-walled steel structures under large-deformation plasticity and fracture is crucial for assessment of accidental loading conditions. This thesis will experimentally determine the crack propagation direction in a thin steel sheet under dif
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To more effectively reduce carbon emissions from ships during op- eration, utilizing hydrogen as a fuel for ship engines has emerged as a promising direction. Given the unique physical properties of hydrogen, targeted modifications to existing engines are necessary for adaptation
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Dual Fuel combustion of Methanol and PODE in a marine ICE and on-board production of PODE
Modelling of a process plant design and engine system
The problem of global warming is becoming every day more and more pressing, leading to the necessity of reducing harmful emissions especially in the shipping sector. Most ships sail with Internal Combustion Engines, reason why it is beneficial to keep using this system, with the
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This graduation thesis studies the CI combustion of ammonia and hydrogen in an ICE. It contains a review of the literature and a modeling study of the ignition and cylinder performance of the AmmoniaDrive test engine. AmmoniaDrive is a NWO-funded research project that aims to dec
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To keep the global warming of the Earth to a minimum, the greenhouse gas emissions need to be reduced. Van Oord aims to be carbon neutral by 2050; therefore, Van Oord is exploring alternative fuels. Ammonia is a promising option to use as a fuel due to the forty times lower well-
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As a big contributor to the the global emissions, the maritime sector strives to bring down its greenhouse gasses and hazardous emissions by enforcing increasing strict rules on the exhaust gasses. This gives major challenges to the maritime sector to develop greener modes of tra
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Methanol Drive
A methanol-fuelled Solid oxide fuel cell - internal combustion engine combined cycle for maritime applications
With the increasing concerns of the emission of greenhouse gases and other pollutants and the push towards sustainable and greener means of transportation, there is a need for new drive systems running on alternative fuels. One fuel that holds significant potential as a marine fu
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Introduction - Hydrofoils are often used for high-performance craft. They enable the hull to rise out of the water and reduce drag. A recurring problem is ventilation, this is the presence of a cavity filled with ambient air on the lifting surface. Ventilation causes the lift of
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To achieve the emission goals set out by the International Maritime Organization in 2018. Low or zerocarbon fuels will have to be used. Ammonia is considered to be a possible candidate since it doesn’t contain carbon. This thesis will attempt to study two methods that characteriz
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New vessels need to remain fuel flexible in order to handle the uncertainties of the future regarding the available alternative fuels aiming to lower their environmental impact. On the other hand, it is even more challenging for existing vessels that are not fuel flexible to succ
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To facilitate the installation of larger monopiles multiple players in the offshore wind market are investigating the floating transport of monopiles to installation locations. This brings the challenge that when these floating monopiles are to be installed by heavy lift vessels,
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Assessing the impact of sustainable fuels for Large Surface Combatants
A comparison between sustainable methanol and diesel for the Future Air Defender of the Royal Netherlands Navy
Progressing targets on GHG emission reduction urge the the Netherlands Ministry of Defense (NL MoD) to reduce the use of fossil fuels, as they announced to contribute to the Paris agreement by reducing its dependency on fossil fuels by at least 70% by the year 2050. However, with
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Alternative fuel selection and operational performance assessment for a 7000 DWT general cargo vessel
Impact assessment of methanol as alternative fuel on the operational performance of the LABRAX sersies vessels
The current global fleet is still dependent on conventional fuels as energy source to transport goods to various places in the world. These conventional fuels, such as MGO or HFO, emit large amounts of greenhouse gasses and other pollutant emissions. Regulation concerning these e
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With the introduction of the Energy Efficiency Design Index, concerns have been raised to the survivability of ships with small engine power to maintain manoeuvring capabilities in adverse weather conditions. Therefore, Sui (2021) developed a simulation model from ‘tank to wake’
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A Digitised Exploration into the Design Space of Naval Power Plants
Optimal Power Plant Selection based on Ship and Client
The design space of power plants of naval surface vessels is ever expanding. As a result, the design space has become too large for a human design team to fully explore. Therefore, a concept exploration tool is introduced to generate and evaluate all possible concepts within the
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In the modern world, environmental concerns arise due to an increase in the green house gas (GHG) emissions of the shipping industry; in 2015, 2,5% of global GHG emissions came from the shipping industry alone. Measures must be set in place to reduce the future emissions. One way
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Often, vessels have multiple operation modes that are specialised for a certain task. If a vessel is employed with a controllable pitch propeller(CPP), the blade pitch can be adjusted, adding a degree of freedom to the system. This advantage creates the possibility to increase th
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The goal of this thesis is to characterise diesel-ammonia combustion using a mean value first principle approach, and to implement this characterisation of diesel-ammonia combustion in a time domain two-stroke engine model. This model will be used to indicate the technical feasib
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Submarines face an ongoing (technical) battle to improve the operational effectiveness by increasing the submerged endurance and range. Installing lithium-ion batteries on new or refitted diesel-electric submarines has become increasingly interesting based on their relatively hig
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Applicability of a modular powerplant with alternative fuels
A case study to determine the impact on ships operation capabilities and power plant performance, when using a modular power plant for a 2999 gross tonnage general cargo concept ship
This paper examines a case study to determine the effects on system performance of the power plant and ship operational capabilities, this case is a ship designed by the company DEKC. It is a small general cargo vessel of 2999 GrT (Gross Tonnage) called the Future Trader. The shi
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