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Methodology for Hydraulic Boundary Conditions and Safety Assessment 2021: SWAN v41.20 validation report for a higher wave climate Suzuki, T.; Trouw, K.; De Roo, S. (2025). Methodology for Hydraulic Boundary Conditions and Safety Assessment 2021: SWAN v41.20 validation report for a higher wave climate. Version 4.0. FH reports, 18_037_1. Flanders Hydraulics: Antwerp. IX, 130 + 8 p. app. pp. https://dx.doi.org/10.48607/323 Deel van: FH reports. Flanders Hydraulics: Antwerp. , meer

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Beschikbaar in	Auteurs
Waterbouwkundig Laboratorium: Open Repository 414100 [ OWA ]
Documenttype: Projectrapport

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Trefwoorden

Coastal protection > Coastal safety against extreme storms > Hydrometeo climate of extreme storms Numerical modelling Water waves > Surface water waves > Wind waves

Author keywords

SWAN; Wave transformation; Belgian continental shelf model

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Project	Top | Auteurs
Hydraulische randvoorwaarden en toetsingsmethodologie 2021, meer

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Contactgegevens

Opdrachtgever: Vlaamse overheid; Beleidsdomein Mobiliteit en Openbare Werken; Vlaams Ministerie van Mobiliteit en Openbare Werken; Agentschap voor Maritieme Dienstverlening en Kust; Afdeling Kust, meer

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Auteurs		Top
Suzuki, T. Trouw, K. De Roo, S., meer

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Abstract

In a safety assessment or design project, wave boundary conditions are necessary nearshore. In order to obtain them, a model for estimation of offshore to nearshore wave transformation and wind-generated waves needs to be applied. In the last two safety assessments (i.e. Safety Assessment 2007 and Safety Assessment 2015), the spectral phase-averaging model SWAN was used as the wave model since it is open source software and requires less computational resources (compared to phase resolving models). Based on these arguments, SWAN will also be used in the Safety Assessment 2021. Validation of an extensive data set of the higher wave climate showed that a change of the value of several input parameters could improve SWAN’s estimation result (e.g. GEN3, breaking, time lag and wind speed reduction). In this report, the selection of the extensive data set is explained, SWAN settings and associated results are discussed and eventually settings for the use of SWAN to calculate the wave boundary conditions nearshore are formulated.

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