Non-Hydrostatic Wave modeling in Partly Sheltered Harbor Basins

The determination of wave conditions in partly sheltered areas is a challenging task for coastal engineers. Knowledge about these conditions is important for the design of coastal structures, the planning and operation of ports. Numerical models play an important role in the assessment of these conditions. Various types of models have been...

Impact of harbor navigation channels on waves: A numerical modelling guideline

This study presents an intercomparison of a SWAN and SWASH wave model and 3D laboratory experiments for an existing navigation channel towards a harbor. Results show that the spectral refraction model SWAN underestimates the wave conditions in the channel and at the lee side of the channel especially - for longer waves travelling under a small...

Impact of Harbor Navigation Channels on Waves: A Numerical Modelling Guideline

This study presents an intercomparison of a SWAN and SWASH wave model and 3D laboratory experiments for an existing navigation channel towards a harbor. Results show that the spectral refraction model SWAN underestimates the wave conditions in the channel and at the lee side of the channel especially - for longer waves travelling under a small...

Alternative Source Terms for SWAN in the Coastal Region

This paper presents the application of new source terms in SWAN for the dominant water wave physics in the coastal zone: depth-induced breaking and triad wave-wave interactions. We present results demonstrating increased modelling skill in the prediction of bulk wave parameters e.g. significant wave height and of the spectral shape compared to...

Analysis of the performance of swash in harbour domains

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...

Swan and its recent developments (poster)

The SWAN model is a third-generation spectral wave prediction model developed by Delft University of Technology. Since its initial release in 1998 this model has become a widely used and reliable tool for offshore and near shore wave predictions. Its main field of application is the coastal zone where, by virtue of its implicit numerical scheme,...

On the Development of an Operational SWAN Model for the Black Sea (poster)

This poster describes the results of some studies performed on the development of an efficient and operational SWAN model for the Black Sea. This model will be used to study the wind-wave climate and wave energy potential in the region and will provide boundary conditions for coastal engineering and nautical activities. The present model...

Individual wave height distributions in the coastal zone: Measurements and simulations and the effect of directional spreading

Characteristics of the individual wave height distribution in shallow water have been investigated using measured wave data and results of numerical simulations using the non-hydrostatic SWASH model. It is shown that the SWASH model is capable of reproducing the temporal and spatial variation of surface elevation in a wave flume and the...

The future of the DIA

Efficient algorithms for non-linear four-wave interactions

This paper addresses the on-going activities in the development of efficient methods for computing the non-linear four-wave interactions in operational discrete third-generation wind-wave models. It is generally assumed that these interactions play an important role in the evolution of wind generated surface gravity waves. Therefore, present day...

Het gebruik van SWAN en SWASH voor het ontwerp van kustconstructies

Doel: Mogelijkheden laten zien van het gebruik van de numerieke golfmodellen SWAN en SWASH voor het ontwerp van kustconstructies. Beschrijving golfparameters en processen voor correcte keuze en toepassing van deze modellen

Improvements in spectral wave modeling in tidal inlet seas

The performance of the spectral wind wave model SWAN in tidal inlet seas was assessed on the basis of extensive wave measurements conducted in the Amelander Zeegat tidal inlet and the Dutch Eastern Wadden Sea, as well as relevant data from other inlets, lakes, estuaries and beaches. We found that the 2006 default SWAN model (version 40.51), the...

A practical method for design of coastal structures in shallow water

Modern design formula for coastal structures (like rock stability formula and overtopping formula use wave parameters (H2% and Tm-1,0) which are not readily available from standard boundary condition wave data. For transforming values like Hs and Tp to the parameters used in the new formulas, often-fixed conversion factors are used. However,...

Computation of the nonlinear energy transfer in a narrow gravity wave spectrum with a method derived by Dungey and Hui

In this report the method of Dungey and Hui is summarized and extended to include the effect of skewness of the directional distribution. Additional information is given about the derivation and computation of the single integrations mentioned above. The method of Dungey and Hui is applied to a number of theoretical spectra. The results of these...

Preliminary investigation into the occurance of wave groups in seas and swell / Toetsing van het model van Kimura voor de beschrijving van golfgroepen

Het doel van deze studie is het onderzoeken van het model van Kimura (1980) voor de beschrijving van golfgroepen. Zoals in deel 1 van dit verslag werd aanbevolen, bestaat dit onderzoek uit de volgende onderdelen 1. Toetsen van het model van Kimura aan metingen. Beoordeling van groeplengteverdelingen met een statistische toets. 2. Vergelijking...