Modeling Wave Overtopping on a Seawall with XBeach, IH2VOF, and Mase Formulas
Metadatos
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MDPI
Materia
Wave overtopping Wave run-up Numerical modeling Modelo XBeach IH2VOF Mase formulas Coastal processes Beach morphodynamics Hydrodynamic modeling
Date
2020Referencia bibliográfica
Oliveira, João N.C.; Oliveira, Filipa S.B.F.; Neves, Maria G.; Clavero, María; Trigo-Teixeira, António A. 2020. "Modeling Wave Overtopping on a Seawall with XBeach, IH2VOF, and Mase Formulas." Water 12, no. 9: 2526. [doi: 10.3390/w12092526]
Patrocinador
project CYTED 2017-PROTOCOL; Portuguese Foundation for Science and Technology PD/BD/128508/2017; PCI2019-103565-SUSME; PID2019-107509GB-I00-ROMPEOLASRésumé
The advances in computational fluid dynamics have made numerical modeling a reliable
complementary tool to the traditional physical modeling in the study of the wave overtopping
phenomenon. This paper addresses overtopping on a seawall by combining the numerical models
XBeach (non-hydrostatic and Surfbeat modes) and IH2VOF, and the Mase formulas. This work is
structured in two phases: (i) phase I assesses the performance of numerical models and formulas in
modeling wave run-up and overtopping on a seawall for a solid profile bottom and representative
hydro-morphologic conditions of a study site in the Portuguese west coast; (ii) phase II investigates
the effect of the profile bottom variation in the overtopping phenomenon for extreme maritime
storm field conditions of the study site, considering a solid bottom and a varying sandy bottom.
The results indicate that XBeach underestimates the wave energy, and the frequency and intensity of
the overtopping occurrences predicted by IH2VOF; the numerical models’ run-up and overtopping
discharge predictions are overestimated by the Mase formulas, in simplified and in storm field
conditions; and the variation of the bottom morphology throughout the storm event greatly influences
the XBeach predictions, while the Mase results are mostly influenced by the bottom roughness.