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Open AccessFeature PaperArticle

Intercomparison of Three Open-Source Numerical Flumes for the Surface Dynamics of Steep Focused Wave Groups

1
School of Engineering, Computing and Mathematics, University of Plymouth, Plymouth PL4 8AA, UK
2
Ifremer Centre Bretagne, Laboratoire Comportement des Structures en Mer, 29280 Plouzané, France
3
Department of Civil and Environmental Engineering, University of Cyprus, Nicosia 1678, Cyrpus
*
Author to whom correspondence should be addressed.
Received: 29 November 2020 / Revised: 13 December 2020 / Accepted: 15 December 2020 / Published: 30 December 2020
(This article belongs to the Special Issue Mathematical and Numerical Modeling of Water Waves)
NewWave-type focused wave groups are commonly used to simulate the design wave for a given sea state. These extreme wave events are challenging to reproduce numerically by the various Numerical Wave Tanks (NWTs), due to the high steepness of the wave group and the occurring wave-wave interactions. For such complex problems, the validation of NWTs against experimental results is vital for confirming the applicability of the models. Intercomparisons among different solvers are also important for selecting the most appropriate model in terms of balancing between accuracy and computational cost. The present study compares three open-source NWTs in OpenFOAM, SWASH and HOS-NWT, with experimental results for limiting breaking focused wave groups. The comparison is performed by analysing the propagation of steep wave groups and their extracted harmonics after employing an accurate focusing methodology. The scope is to investigate the capabilities of the solvers for simulating extreme NewWave-type groups, which can be used as the “design wave” for ocean and coastal engineering applications. The results demonstrate the very good performance of the numerical models and provide valuable insights to the design of the NWTs, while highlighting potential limitations in the reproduction of specific harmonics of the wave group. View Full-Text
Keywords: extreme waves; focused waves; dispersion; harmonic analysis; CFD; OpenFOAM; SWASH; HOS extreme waves; focused waves; dispersion; harmonic analysis; CFD; OpenFOAM; SWASH; HOS
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MDPI and ACS Style

Vyzikas, T.; Stagonas, D.; Maisondieu, C.; Greaves, D. Intercomparison of Three Open-Source Numerical Flumes for the Surface Dynamics of Steep Focused Wave Groups. Fluids 2021, 6, 9. https://doi.org/10.3390/fluids6010009

AMA Style

Vyzikas T, Stagonas D, Maisondieu C, Greaves D. Intercomparison of Three Open-Source Numerical Flumes for the Surface Dynamics of Steep Focused Wave Groups. Fluids. 2021; 6(1):9. https://doi.org/10.3390/fluids6010009

Chicago/Turabian Style

Vyzikas, Thomas; Stagonas, Dimitris; Maisondieu, Christophe; Greaves, Deborah. 2021. "Intercomparison of Three Open-Source Numerical Flumes for the Surface Dynamics of Steep Focused Wave Groups" Fluids 6, no. 1: 9. https://doi.org/10.3390/fluids6010009

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