Intercomparison of Three Open-Source Numerical Flumes for the Surface Dynamics of Steep Focused Wave Groups
| Autor: | Christophe Maisondieu, Deborah Greaves, Dimitris Stagonas, Thomas Vyzikas |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
010504 meteorology & atmospheric sciences
Computer science Sea state lcsh:Thermodynamics Computational fluid dynamics 01 natural sciences 010305 fluids & plasmas Harmonic analysis lcsh:QC310.15-319 0103 physical sciences OpenFOAM Coastal engineering Rogue wave Dispersion (water waves) focused waves lcsh:QC120-168.85 0105 earth and related environmental sciences Fluid Flow and Transfer Processes SWASH business.industry Mechanical Engineering HOS extreme waves Condensed Matter Physics Harmonics harmonic analysis lcsh:Descriptive and experimental mechanics dispersion business CFD Marine engineering Swash |
| Zdroj: | Fluids (2311-5521) (MDPI AG), 2021-01, Vol. 6, N. 1, P. 9 (28p.) Fluids Volume 6 Issue 1 Fluids, Vol 6, Iss 9, p 9 (2021) |
| Popis: | 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 &ldquo design wave&rdquo 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. |
| Databáze: | OpenAIRE |
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