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Numerical modeling of tsunami wave run-up and effects on sediment scour around a cylindrical pier / Cunhong Pan in Journal of engineering mechanics, Vol. 138 N° 10 (Octobre 2012) 

Public ISBD [article]  in Journal of engineering mechanics > Vol. 138 N° 10 (Octobre 2012) . - pp.1224–1235. Titre : Numerical modeling of tsunami wave run-up and effects on sediment scour around a cylindrical pier Type de document : texte imprimé Auteurs : Cunhong Pan, Auteur ; Wenrui Huang, Auteur Année de publication : 2012 Article en page(s) : pp.1224–1235. Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Tsunami  Wave  Beach  Run-up  Cylinder  Pier  Sediment  Scour  Shallow  water  Hydrodynamic  modeling Résumé : The linked two-dimensional hydrodynamic and sediment-scour models have been enhanced to simulate tsunami wave run-up on a sloping beach to determine its effects on sediment scour around a cylinder pier located in the wave breaking and run-up zone. To resolve the steep wavefront of the tsunami bore, the kinetic flux vector splitting scheme was adopted to solve the hydrodynamic model equations in the unstructured triangular mesh. The models have been validated by comparing model simulations with experimental data. The results indicate that the model predictions of water surface elevations and velocity match well with the measured data. The error for peak flood elevation ranges from 0.01 to 0.11 m, and the maximum error for the peak velocity is 6%. The model simulations adequately characterize the tsunami wave propagations and transformations as the wave approaches the beach from offshore, especially for the sharp tsunami front before it breaks and the tsunami bore runs up in the beach slope. The model simulations also reasonably describe the dynamics of the sediment scour around a cylinder pier, showing the sediment scour during wave run-up and sediment deposition during wave rundown. The Model predictions of the final scour depths after the wave impact at three measurement stations reasonably matched the experimental measurements. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29EM.1943-7889.0000406 [article] Numerical modeling of tsunami wave run-up and effects on sediment scour around a cylindrical pier [texte imprimé] / Cunhong Pan, Auteur ; Wenrui Huang, Auteur . - 2012 . - pp.1224–1235. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 138 N° 10 (Octobre 2012) . - pp.1224–1235. Mots-clés : Tsunami  Wave  Beach  Run-up  Cylinder  Pier  Sediment  Scour  Shallow  water  Hydrodynamic  modeling Résumé : The linked two-dimensional hydrodynamic and sediment-scour models have been enhanced to simulate tsunami wave run-up on a sloping beach to determine its effects on sediment scour around a cylinder pier located in the wave breaking and run-up zone. To resolve the steep wavefront of the tsunami bore, the kinetic flux vector splitting scheme was adopted to solve the hydrodynamic model equations in the unstructured triangular mesh. The models have been validated by comparing model simulations with experimental data. The results indicate that the model predictions of water surface elevations and velocity match well with the measured data. The error for peak flood elevation ranges from 0.01 to 0.11 m, and the maximum error for the peak velocity is 6%. The model simulations adequately characterize the tsunami wave propagations and transformations as the wave approaches the beach from offshore, especially for the sharp tsunami front before it breaks and the tsunami bore runs up in the beach slope. The model simulations also reasonably describe the dynamics of the sediment scour around a cylinder pier, showing the sediment scour during wave run-up and sediment deposition during wave rundown. The Model predictions of the final scour depths after the wave impact at three measurement stations reasonably matched the experimental measurements. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29EM.1943-7889.0000406