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H2020Doctoral network2020–2023

EAGRE · Eagre/Aegir: high-seas wave-impact modelling

Horizon 2020 — Marie Skłodowska-Curie Actions

Duration
2020-01-01 → 2023-12-31
EU contribution
€606,345
Participants
2
Scheme
MSCA-ITN

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Results in brief

Eagre/Aegir: high-seas wave-impact modelling

The EU project ``Eagre: high-seas wave-impact modelling'' (project no. 859983) has established numerical wavetanks with which we have analysed the effects of extreme waves and wave-wind-turbine interactions, for deployment in the maritime-engineering sector. The project has been founded on an active collaboration between the University of Leeds and the Maritime Research Institute Netherlands (MARIN). Wave modelling is societally important in terms of the safety and reliability of offshore industries and shipping at sea. Minimising damage to marine structures is not only crucial for cost-effective and efficient operations in the maritime-engineering sector but also equally important in the mitigation of both environmental disasters and potential loss of life at sea. Research on establishing and testing numerical wavetanks has been based on new techniques involving variational principles (VPs) as well as software modelling tools at MARIN, for both physical continuum modelling and computational implementations. Advantages of using VPs have been that they have provided stable, robust and efficient numerical methods, implemented in an automated manner in the fine-element environment Firedrake. The distinctively challenging aspect has been the dynamic interaction of evolving unknown boundaries of fluid and solid components, resolution with cutting-edge mathematical theory and numerical techniques. Our numerical models have been validated against data from wavetank measurements, including a new dataset on fluid-structure interactions (FSI). This automated implementation of numerical schemes using VPs and the acquisition of new FSI data are the highlights of our project.

Data: CORDIS, © European Union

Project objective

The overall objective is to create and deliver computational/mathematical modelling tools for solving problems in maritime engineering, based on advanced mathematical/numerical analysis and efficient implementation and testing in a general finite-element simulation environment offered by Firedrake (Imperial College with Leeds). Our key task is to offer training/research such that a so-called ""numerical wavetank"" is established by two ESRs for use in maritime-engineering wave basins, such as operational for consulting at the Maritime Research Institute Netherlands (MARIN Academy). Our research will provide the ESRs with a skill set that is highly attractive in the job market to employers engaged in high-end consulting. The integrated objectives are to create: (i) a numerical wavetank “ExtremeWaves” (ESR1) concerning modelling of extreme or rogue waves in wave basins integrated with (ii) a numerical wavetank “WaveTurbineImpact” (ERS2) concerning wave-structure interactions, especially wave-impact, on a dynamic wind-turbine mast. The overall objectives build on our recent and current collaborative work (between U. of Leeds and MARIN Academy) on the modelling of water waves and wave-structure interactions with (dis)continuous Galerkin finite-element methods. The above objectives offer challenging demands, not least because the prediction of wave motion around moving or flexible structures is a difficult computational task as a result of the requirement to track (generally using a sophisticated approximation) the a-priori-unknown nonlinear air-water and water-structure interfaces (and their cross-section, the waterline). Conquering these demands is timely because numerical simulations are cheaper than laboratory tests. Moreover, because in realistically motivated challenges mathematical modelling, laboratory testing and cross-validation via computational simulation are inextricably entwined, we view them all as essential components in our so-called ""Research Trinity"".""

Original text from CORDIS.

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Data: CORDIS, © European Union