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Numerical study of an impulse wave generated by a sliding mass

Author

Schillaci, Eugenio

Favre Samarra, Federico

Antepara Zambrano, Óscar

Balcázar Arciniega, Néstor

Oliva Llena, Asensio

Other authors

Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics

Universitat Politècnica de Catalunya. CTTC - Centre Tecnològic de la Transferència de Calor

Publication date

2018

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Abstract

© 2018 WIT Press

In this work, a numerical framework for the direct numerical simulation of tsunami waves generated by landslide events is proposed. The method, implemented on the TermoFluids numerical platform, adopts a free surface model for the simulation of momentum equations; thus, considering the effect of air on the flow physics negligible. The effect of the solid motion on the flow is taken into account by means of a direct forcing immersed boundary method (IBM). The method is available for 3-D unstructured meshes; however, it can be integrated with an adaptive mesh refinement (AMR) tool to dynamically increase the local definition of the mesh in the vicinity of the interfaces, which separate the phases or in the presence of vortical structures. The method is firstly validated by simulating the entrance of objects into still water surfaces for 2-D and 3-D configurations. Next, the case of tsunami generation from a subaerial landslide is studied and the results are validated by comparison to experimental and numerical measurements. Overall, the model demonstrates its efficiency in the simulation of this type of physics, and a wide versatility in the choice of the domain discretization.

Peer Reviewed

Postprint (published version)

Document Type

Article

Language

English

Subjects and keywords

Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids; Computational fluid dynamics; 3-D unstructured mesh; AMR; CFD; Conservative level-set; Finite-volume discretization; Fluids–solid interaction; Free-surface model; Immersed boundary method; Tsunami simulation; Dinàmica de fluids computacional

Publisher

WIT Press

Related items

https://www.witpress.com/elibrary/cmem-volumes/6/1/1961

info:eu-repo/grantAgreement/MINECO//ENE2015-70672-P/ES/MODELIZACION MULTIESCALA Y SIMULACION NUMERICA DIRECTA DE FLUJOS MULTIFASICOS GAS LIQUIDO EN BURBUJAS, PELICULAS Y ESPRAYS./

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Rights

Open Access

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E-prints [72986]