A5010379726- Coastal and Marine Dynamics
- Ocean Waves and Remote Sensing
- Oceanographic and Atmospheric Processes
- Tropical and Extratropical Cyclones Research
- Geological formations and processes
- Coastal wetland ecosystem dynamics
- Wave and Wind Energy Systems
- Coastal and Marine Management
- Marine and coastal ecosystems
- Aeolian processes and effects
- Marine and Offshore Engineering Studies
- Water Quality Monitoring and Analysis
- Soil erosion and sediment transport
- Hydrology and Sediment Transport Processes
- Remote Sensing in Agriculture
- Underwater Acoustics Research
- Remote-Sensing Image Classification
- Marine and environmental studies
- Fluid Dynamics Simulations and Interactions
- Ship Hydrodynamics and Maneuverability
- Soil Geostatistics and Mapping
- Flood Risk Assessment and Management
- Geochemistry and Geologic Mapping
- Maritime Navigation and Safety
- Offshore Engineering and Technologies
KU Leuven
2015-2024
Catholic University of America
2019
Ghent University
2018
Swinburne University of Technology
2015
Laboratoire de Mathématiques de Bretagne Atlantique
2007
Universidad de Cantabria
2006
Flanders Hydraulics
1997-2005
DNV (Norway)
2005
International Marine and Dredging Consultants
1998
Abstract In this paper, different partitioning techniques and methods to identify wind sea swell are investigated, addressing both 1D 2D schemes. Current depend largely on arbitrary parameterizations assess if wave systems significant or spurious. This makes the implementation of automated procedures difficult, not impossible, calibrate. To avoid limitation, for spectrum, use a digital filter is proposed help algorithm keep important features spectrum disregard noise. For mechanism oriented...
We discuss two independent, large scale experiments performed in wave basins of different dimensions which the statistics surface elevation are addressed. Both facilities equipped with a maker capable generating waves prescribed frequency and directional properties. The experimental results show that probability formation amplitude strongly depends on properties waves. Sea states characterized by long-crested steep more likely to be populated freak respect those spreading.
A wave basin experiment has been performed in the MARINTEK laboratories, one of largest existing three-dimensional tanks world. The aim is to investigate effects directional energy distribution on statistical properties surface gravity waves. Different degrees directionality have considered, starting from long-crested waves up distributions with a spread ±30° at spectral peak. Particular attention given tails function elevation, heights and crests. Comparison simplified model based...
Nonlinear modulational instability of wavepackets is one the mechanisms responsible for formation large-amplitude water waves. Here, mechanically generated waves in a three-dimensional basin and numerical simulations nonlinear have been compared order to assess ability models describe evolution weakly predict probability occurrence extreme within variety random directional wave fields. Numerical performed following two different approaches: integration modified Schrödinger equation potential...
[1] We present an experimental and numerical investigation on the statistical properties of surface elevation in crossing sea conditions. Experiments are performed a very large wave basin (70 m × 50 3 m) results obtained using higher order method for solving Euler equations. Both indicate that number extreme events depends angle between two interacting systems. This outcome is supported by recent theoretical investigations which have highlighted instability packets may be triggered nonlinear...
We investigate experimentally the statistical properties of a wind-generated wave field and spontaneous formation rogue waves in an annular flume. Unlike many experiments on where are mechanically generated, here is forced naturally by wind as it ocean. What unique about present experiment that geometry tank makes propagating circularly unlimited-fetch condition. Within this peculiar framework, we discuss temporal evolution surface elevation. show heavy-tail statistics may develop during...
Irregular, unidirectional surface water waves incident on model ice in an tank are used as a physical of ocean wave interactions with sea ice. Results given for experiment consisting three tests, starting continuous cover and which the steepness increases between tests. The range from causing no breakup to full length cover. Temporal evolution edge, breaking front mean floe sizes reported. Floe size distributions different tests analysed. spectrum distance into ice-covered is analysed terms...
We present a laboratory experiment in large directional wave basin to discuss the instability of plane oblique side band perturbations finite water depth. Experimental observations, with support numerical simulations, confirm that carrier becomes modulationally unstable even for relative depths k0h < 1.36 (with k wavenumber and h depth), when it is perturbed by appropriate disturbances. Results corroborate underlying mechanism still plausible explanation generation rogue waves
Abstract. A coupling of a spectral wave model with nonlinear phase-resolving is used to reconstruct the evolution statistics during storm crossing North Sea on 8–9 November 2007. During this rogue (named Andrea wave) was recorded at Ekofisk field. The has characteristics comparable well-known New Year measured by Statoil Draupner platform 1 January 1995. Hindcast data nearest grid point field are here applied as input calculate random realizations sea surface and its statistical properties....
Abstract The second-order, three-dimensional, finite-depth wave theory is here used to investigate the statistical properties of surface elevation and crests field data from Lake George, Australia. A direct comparison experimental numerical shows that, as long nonlinearity small, second-order model describes very accurately. By low-pass filtering George time series, there evidence that some energetic groups are accompanied by a setup instead setdown. study coupling coefficient reveals such...
Traditionally, the directional distribution of ocean waves has been regarded as unimodal, with energy concentrated mainly on wind direction. However, numerical experiments and field measurements have already demonstrated that short tends to be accumulated along two off‐wind directions, generating a bimodal distribution. Here, simulations potential Euler equations are used investigate temporal evolution initially unimodal wave spectra. Because this approach does not include external forcing...
Abstract. Two-way feedback occurs between offshore wind and waves. However, the influence of waves on profile remains understudied, in particular momentum transfer sea surface atmosphere. Previous studies showed that for swell it is possible to have increasing speeds case aligned wind–wave directions. opposite valid opposed directions, where a decrease velocity observed. Up now, this behavior has not been included most numerical models due lack an appropriate parameterization resulting...
Abstract The importance of wind energy as an alternative source has increased over the latest years with more focus on offshore winds. A good estimation winds is thus major for this industry. Up to now effect wind–wave (mis)alignment not yet been taken into account in coupled atmosphere–wave models study vertical profile and power production estimations farms. In roughness length parametrization Drennan et al . 2003, its extension addressing proposed by Porchetta 2019, are investigated...
Abstract. Laboratory experiments were performed to study the dynamics of three- dimensional mechanically generated waves propagating over an oblique current in partial opposition. The flow velocity varied along mean wave direction propagation with increasing trend between wave-maker and centre tank. Tests regular packets traversing area positive gradient showed that concurrent increase steepness triggered modulational instability on otherwise stable trains hence induced development very...