Modelling Fluid-structure Interaction in Offshore Photovoltaics

The main aim of the research presented in this report is investigating analytical methods to model fluid-structure interaction in large-scale offshore floating photovoltaics. The model that was attempted to be solved analytically is based on a model presented by Pengpeng Xu (2022).<br/>The dimensions in the equations were removed. Applying a...

Stinger monitoring system: A sensor placement method for damage localisation and damage quantification applied to a stinger monitoring system

A stinger is a steel space frame structure, used on pipe-lay vessels, to support the weight of a suspended pipeline. A stinger is highly fatigue loaded due to environmental loads, vessel motions and variable pipe loads. In the design phase, predictions for the structural behaviour of the stinger were made. However, inspection history showed...

CFD simulations of the flow around a tanker in shallow water with muddy seabed

Reducing dredging activities in the harbors brings benefits both economically and environmentally. However, this means that ships may have to sail very close to or even through the mud layer on the seabed, with possible effects on ships’ resistance and manoeuvrability. This study has made a step in understanding these effects on ships’...

Numerical simulations of a novel offshore floating solar system: A study on the simulation possibilities for an interconnected, multi-body floating system using a combined frequency-time domain approach

The development of renewable energy applications has become increasingly important in the past couple of years due to a growing global energy demand and increasing consciousness of global warming. A recent development in renewable energy is the application of offshore floating solar systems. A prototype design for this application, as developed...

Tailor-made Project Management: A redefined approach towards unique projects for Koninklijke Niestern Sander

Conversion projects are considered as a growing market within the new build and in particular the repair market within the maritime industry, due to ever more demanding environmental regulations. A development that Royal Niestern Sander (KNS) embraces and wants to exploit further. Although conversion projects are already being executed,...

Casing Expansion in mono-diamater wells: a thermal analysis

When drilling for oil or gas, wells are typically constructed using a conventional or telescopic well design. After a section of the well has been drilled, a steel casing (or liner) is inserted into the hole preventing the collapse of the hole. The next well section has a smaller diameter as it’s casing must pass through the previously installed...

A novel technique for interface reconstruction in transparent media

A novel technique for measuring capillary/gravity waves travelling on air/water interfaces is investigated. The main motivation is to measure the free surface deformations of an air cavity used for air lubrication of ship hulls. Due to limitations in the available techniques, two novel methods are proposed, out of which the Stereo Particle Image...

Analysis of elastoplastic response of maritime structures in breaking waves using a double pendulum with a friction hinge

Waves impacting on maritime structures can cause damage which endangers the environment around these structures. Due to high hydrodynamic loading, structures can enter the plastic regime, resulting possibly in structural failure. The understanding of the principles related to this structural failure due to waves is a key concept in this research...

Concept Design of a 10 MW Ship-Shaped OTEC Plant

The purpose of the research is to provide insight into the conversion of a second-hand vessel into an Ocean Thermal Energy Conversion (OTEC) plant. To this end, a 10 MW ship-shaped OTEC platform, located in the waters around Curaçao, has been designed.<br/>At present, only a few of OTEC plants are in operation, primarily with the purpose of...

Noise Considerations for Propulsion System Evaluation

The laws and regulations regarding the radiated noise and the on-board noise of the ship are expected to be stricter in the future. There is a big concern in this field, especially for the underwater noise. The radiated noise from the ship is harming the life of the underwater mammals while the on-board noise is threatening the health of the on...

Collaborative Gain Assessment for the Dynamic Multi-Objective Vehicle Routing Problem

Inefficiency in trucking has both economical and ecological consequences. In literature, horizontal collaboration is identified as one of the most promising solutions to this problem. However, collaboration is not often encountered in trucking industry, since carriers are hesitant to join collaborations. This is caused by a fear of sharing...

Dynamic analysis of a mechanical connection between an installation vessel and a floating offshore wind turbine

Huisman has introduced the Windfarm Installation Vessel as a complete solution to assemble and install offshore wind turbines at sea.<br/>Installing a floating wind turbine at sea brings two main challenges, the relative motions between the floating structures and the load transfer of the wind turbine.<br/>The proposed installation procedure...

Trim optimization for ships in service: A grey-box model approach using operational voyage data

Trim optimization is an approach considered by the industry to improve the energy efficiency of ships, having a potential in both reducing operational costs and to decrease the emissions of the ship. Potential fuel consumption reduction by trim optimization is 0.5 to 3 % and to up to 7% in extreme cases. Stolt Tankers, a shipping company active...

Modelling Symphony motion: Towards a better understanding of 2D Symphony motion

This work simulates the impact of horizontal motion on the Symphony wave power device. To that end the existing time domain simulation is expanded with a module that simulates horizontal motion in the 2d plane. This extension is coupled with the existing operational modelling. the extension is based on a mathematical motion model based on rigid...

Topology and variable optimization of a planar quasi-zero stiffness mechanism for motion isolation during the installation of wind turbine blades

Current service and installation activities for offshore wind turbines are carried out by jack-up vessels, which eliminate wave disturbances to a large extent. The use of these vessels imposes several disadvantages, including high operational costs and the limitation of operating in restricted water depths. An alternative is a crane mounted on a...

An Active Reflection Compensation (ARC) Algorithm for a Wave Generator

The development of an Active Reflection Compensation (ARC) algorithm for a wave generator is challenging. Water behaves in a strong nonlinear way and the time available for the computation of the compensating segment displacements is short. Especially for the case where the wave height sensors are mounted on the surface of the segments. The...

Mooring System Design for Wind Farm In Very Deep Water: European Wind Energy Master Thesis

Offshore floating wind turbines are one of the newest technologies in the renewable markets today. The world’s first floating wind farm, the Hywind Scotland Pilot Park, was commissioned in October 2017 and has been competitive with fixed bottom offshore wind turbines. There is a global push to make more renewable energy available, but less...