Hydrodynamical Comparison of Nami Dance and XBeach Non-Hydrostatic on a Benchmark Study

Date

2022-05-26

Author

Çiçek, Yağız Arda
Doğan Bingöl, Gözde Güney
Güler, Işıkhan
Baykal, Cüneyt
Yalçıner, Ahmet Cevdet

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Tsunamis are destructive long waves generated by a sudden displacement of a water column. Their modeling (numerical or physical) holds great importance while developing mitigation strategies. Although the methods followed during numerical and physical modeling studies differ, they feed off each other. Numerical models should be verified and validated on experimental data to get more accurate results. Within this framework, benchmark study results provide valuable data to ensure the numerical model works properly. Therefore, two different numerical models, NAMI DANCE (a non-linear shallow water equation solver with hydrostatic pressure assumption) and XBeach Non-hydrostatic (an NLSWE solver with a non-hydrostatic pressure term in the governing equations) are applied on a benchmark experiment (Park et al., 2013) during this study. This benchmark study investigates the effect of macro-roughness elements on inundation flow depth, cross-shore velocity, and momentum flux. A solitary wave having 0.2 m wave height is generated by a piston type wavemaker. Grid and time resolutions are kept equal in both NAMI DANCE and XBeach simulations. Simulation results of the two models are compared, and the effects of non-hydrostatic pressure correction on flow parameters are presented with discussions.

URI

https://hdl.handle.net/11511/106228

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Department of Civil Engineering, Conference / Seminar