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Scharnke, Jule (author), van Essen, S.M. (author), Seyffert, Harleigh C. (author)
In the assessment of wave-in-deck loads for new and existing maritime structures typically model tests are carried out. To determine the most critical conditions and measure sufficient impact loads, a range of sea states and various seeds (realisations) for each sea state are tested. Based on these measurements, probability distributions can...
journal article 2023
document
Dobrochinski, João P.H. (author), van Deyzen, Alex (author), Zijlema, Marcel (author), van der Hout, A.J. (author)
Accurate modelling of waves in harbours and the response of moored ships to that type of forcing is of prime importance to determine the safety and workability of ships moored at berths exposed to local wave conditions. This study investigates the combination of a non-hydrostatic wave-flow model (SWASH) and a 3D boundary-integral diffraction...
journal article 2023
document
van Essen, S.M. (author), Scharnke, Jule (author), Seyffert, Harleigh C. (author)
For the design of maritime structures in waves, the extreme values of responses such as motions and wave impact loads are required. Waves and wave-induced responses are stochastic, so such responses should always be related to a probability. This information is not easy to obtain for strongly non-linear responses such as wave impact forces....
journal article 2023
document
de Koster, P.B.J. (author), Brühl, M. (author), Wahls, S. (author)
We propose a novel method to determine the average water depth from shallow, weakly nonlinear water waves that are approximated by the Korteweg-de Vries equation. Our identification method only requires free-surface measurements from two wave gauges aligned in the direction of wave propagation. The method we propose is based on comparing...
conference paper 2022
document
Tas, S.A.J. (author), van Maren, D.S. (author), Helmi, Muhammad (author), Reniers, A.J.H.M. (author)
A chenier is a beach ridge, consisting of sand and/or shells, overlying a muddy substrate. In this paper, we explore the cross-shore dynamics of cheniers in their ‘active’ phase, i.e. the phase between their formation and their landing on the shore and can no longer be reached by daily wave and tidal influences. While cheniers described in...
journal article 2022
document
Elmilady, H.M.S.M.A. (author), van der Wegen, M. (author), Roelvink, D. (author), van der Spek, A. (author)
Intertidal shoals are key features of estuarine environments worldwide. Climate change poses questions regarding the sustainability of intertidal areas under sea-level rise (SLR). Our work investigates the SLR impact on the long-term morphological evolution of unvegetated intertidal sandy shoals in a constrained channel-shoal system....
journal article 2022
document
Torres Alves, G.A. (author), Morales Napoles, O. (author), Jonkman, Sebastiaan N. (author)
A submerged floating tunnel (SFT) is a novel structure that allows crossing waterways where immersed tunnels or bridges are not viable. However, no SFT has been built yet mainly, due to lack of experience. In consequence, there are several uncertainties regarding its design and construction. An effect that should be further investigated is the...
conference paper 2021
document
van Essen, S.M. (author), Monroy, Charles (author), Shen, Zhirong (author), Helder, Joop (author), Kim, Dae Hyun (author), Seng, Sopheak (author), Ge, Zhongfu (author)
Design loads for extreme wave events on ships, such as slamming and green water, are hard to define. These events depend on details in the incoming waves, ship motions and structure layout, which requires high-fidelity tools such as CFD or experiments to obtain the correct loads. These tools (presently) do not have the capability to fully...
journal article 2021
document
Gawehn, M.A. (author), de Vries, S. (author), Aarninkhof, S.G.J. (author)
Mapping coastal bathymetry from remote sensing becomes increasingly more attractive for the coastal community. It is facilitated by a rising availability of drone and satellite data, advances in data science, and an open-source mindset. Coastal bathymetry, but also wave directions, celerity and near-surface currents can simultaneously be derived...
journal article 2021
document
Elmilady, H.M.S.M.A. (author), Van Der Wegen, M. (author), Roelvink, D. (author), van der Spek, A. (author)
Intertidal shoals are vital components of estuaries. Tides, waves, and sediment supply shape the profile of estuarine shoals. Ensuring their sustainability requires an understanding of how such systems will react to sea level rise (SLR). In contrast to mudflats, sandy shoals have drawn limited attention in research. Inspired by a channel...
journal article 2020
document
Wani, F.M. (author), Shipurkar, U. (author), Dong, J. (author), Polinder, H. (author), Jarquin Laguna, A. (author), Mostafa, Kaswar (author), Lavidas, G. (author)
Thermal cycling is one of the major reasons for failure in power electronic converters. For submerged tidal turbine converters investigating this failure mode is critical in improving the reliability, and minimizing the cost of energy from tidal turbines. This paper considers a submerged tidal turbine converter which is passively cooled by...
journal article 2020
document
Basu, S. (author), Osborn, J. (author), He, P. (author), DeMarco, A. W. (author)
The high-fidelity modelling of optical turbulence is critical to the design and operation of a new class of emerging highly sophisticated astronomical telescopes and adaptive optics instrumentation. In this study, we perform retrospective simulations of optical turbulence over the Hawaiian islands using a mesoscale model. The simulated...
journal article 2020
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Rivera Arreba, I. (author), Bruinsma, N. (author), Bachynski, E. E. (author), Viré, A.C. (author), Paulsen, B. T. (author), Jacobsen, N. G. (author)
Floating offshore wind platforms may be subjected to severe sea states, which include both steep and long waves. The hydrodynamic models used in the offshore industry are typically based on potential-flow theory, and/or Morison's equation. These methods are computationally efficient, and can be applied in global dynamic analysis considering...
conference paper 2018
document
Smit, P.B. (author)
Predicting the mean wave statistics in the nearshore, for instance the significant wave height, has predominantly been the domain of operational stochastic wave models based on the radiative transport (or energy balance) equation. Although reasonably successful in the nearshore, these models were originally developed for oceanic scales, and...
doctoral thesis 2014
document
Alabart, J. (author), Sanchez-Arcilla, A. (author), Van Vledder, G.P. (author)
Wave penetration inside harbours has been one the main issues that port planners and engineers have had to deal with in recent years. Wave conditions inside harbours trigger vessel movements, create dynamic loads on port structures and condition harbour exploitation and safety. For this reason in the recent past maritime and port engineers have...
conference paper 2014
document
Jimenez, J.A. (author)
This document provides an overview of the effects of the impact of the main recent storms in the Ebro delta that have induced “managerial” problems. The reported storms have been identified as “problematic” events by the Generalitat de Catalunya (the local manager) because they have had some consequences from the ecological and/or economical...
report 2009
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Young, M. (author)
This MSc thesis details the investigation of grass cover performance in relation to wave overtopping processes. Failure modes for grass cover are considered and developed
report 2009
document
Kortenhaus, A. (author)
This report reviews previous investigations on hydraulic loading conditions for different types of flood defence structures such as sea dikes, dunes, beaches and seawalls. For each of these structures the physical processes involved are discussed in some detail and methods are given to either predict relevant input parameters for failure modes...
report 2007
document
Van der Meer, J.W. (author)
Placement of smart grass reinforcement at test sections Groningen Sea Dyke
report 2007
document
Van der Meer, J.W. (author)
Design, construction and calibration of wave overtopping simulator
report 2007
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