Numerical modeling of tsunamis generated by granular landslides in OpenFOAM®: A Coulomb viscoplastic rheology

Landslide-generated tsunamis are a relevant hazard. Their low frequency/high consequences character and the complex phenomena related to their generation, propagation and interaction with the shore make the proper modeling of these phenomena a crucial activity to mitigate the related risk. In this a...

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Detalhes bibliográficos
Autores: Romano, Alessandro, López Lara, Javier|||0000-0003-0968-1909, Barajas Ojeda, Gabriel, Losada Rodríguez, Iñigo|||0000-0002-9651-9709
Formato: artículo
Fecha de publicación:2023
País:España
Recursos:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/30236
Acesso em linha:https://hdl.handle.net/10902/30236
Access Level:acceso abierto
Palavra-chave:Granular landslides
Numerical modeling
Tsunamis
Water waves
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spelling Numerical modeling of tsunamis generated by granular landslides in OpenFOAM®: A Coulomb viscoplastic rheologyRomano, AlessandroLópez Lara, Javier|||0000-0003-0968-1909Barajas Ojeda, GabrielLosada Rodríguez, Iñigo|||0000-0002-9651-9709Granular landslidesNumerical modelingTsunamisWater wavesLandslide-generated tsunamis are a relevant hazard. Their low frequency/high consequences character and the complex phenomena related to their generation, propagation and interaction with the shore make the proper modeling of these phenomena a crucial activity to mitigate the related risk. In this article, a new numerical method for modeling tsunamis generated by granular landslides in OpenFOAM® is presented. The approach consists in modeling the granular material by using a Coulomb viscoplastic rheology (non-Newtonian rheology) implemented in the standard solver multiPhaseInterFoam. The proposed approach is simple as it only depends on few physics-based parameters, thus implying less uncertainties than dense fluid models and more flexibility and computational efficiency than Euler?Euler approaches. This numerical framework is applied to reproduce three literature benchmark landslide-tsunami cases: two-dimensional (2D) submerged as well as 2D and threedimensional (3D) subaerial. Comparing numerical and experimental results, a good agreement is found for granular material behavior, while an overall very good (excellent in some cases) agreement is found as far as fluid behavior and waves characteristics are concerned, testifying that the momentum transfer between granular and fluid phases is well reproduced by this simple rheological model. Qualitative descriptions of the numerical results, in terms of landslide behavior, wave generation characteristics, and velocity field during the generation/propagation process are provided. Moreover, quantitative comparisons between experimental and numerical results by comparing landslide evolution, free surface elevation time series, and runup time series are presented and discussed in the article.The authors acknowledge the financial support from the Government of Cantabria through the Fénix Program. The kind help of Prof. Hermann Fritz, who provided further information on the 3D subaerial case, is warmly acknowledged. A special acknowledgment is due to Prof. Bellotti for the constant support and fruitful discussions.ElsevierUniversidad de Cantabria20232023-01-01journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articlehttps://hdl.handle.net/10902/30236Coastal Engineering, 2023, 186, 104391reponame:UCrea Repositorio Abierto de la Universidad de Cantabriainstname:Universidad de Cantabria (UC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:repositorio.unican.es:10902/302362026-06-02T12:39:31Z
dc.title.none.fl_str_mv Numerical modeling of tsunamis generated by granular landslides in OpenFOAM®: A Coulomb viscoplastic rheology
title Numerical modeling of tsunamis generated by granular landslides in OpenFOAM®: A Coulomb viscoplastic rheology
spellingShingle Numerical modeling of tsunamis generated by granular landslides in OpenFOAM®: A Coulomb viscoplastic rheology
Romano, Alessandro
Granular landslides
Numerical modeling
Tsunamis
Water waves
title_short Numerical modeling of tsunamis generated by granular landslides in OpenFOAM®: A Coulomb viscoplastic rheology
title_full Numerical modeling of tsunamis generated by granular landslides in OpenFOAM®: A Coulomb viscoplastic rheology
title_fullStr Numerical modeling of tsunamis generated by granular landslides in OpenFOAM®: A Coulomb viscoplastic rheology
title_full_unstemmed Numerical modeling of tsunamis generated by granular landslides in OpenFOAM®: A Coulomb viscoplastic rheology
title_sort Numerical modeling of tsunamis generated by granular landslides in OpenFOAM®: A Coulomb viscoplastic rheology
dc.creator.none.fl_str_mv Romano, Alessandro
López Lara, Javier|||0000-0003-0968-1909
Barajas Ojeda, Gabriel
Losada Rodríguez, Iñigo|||0000-0002-9651-9709
author Romano, Alessandro
author_facet Romano, Alessandro
López Lara, Javier|||0000-0003-0968-1909
Barajas Ojeda, Gabriel
Losada Rodríguez, Iñigo|||0000-0002-9651-9709
author_role author
author2 López Lara, Javier|||0000-0003-0968-1909
Barajas Ojeda, Gabriel
Losada Rodríguez, Iñigo|||0000-0002-9651-9709
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad de Cantabria
dc.subject.none.fl_str_mv Granular landslides
Numerical modeling
Tsunamis
Water waves
topic Granular landslides
Numerical modeling
Tsunamis
Water waves
description Landslide-generated tsunamis are a relevant hazard. Their low frequency/high consequences character and the complex phenomena related to their generation, propagation and interaction with the shore make the proper modeling of these phenomena a crucial activity to mitigate the related risk. In this article, a new numerical method for modeling tsunamis generated by granular landslides in OpenFOAM® is presented. The approach consists in modeling the granular material by using a Coulomb viscoplastic rheology (non-Newtonian rheology) implemented in the standard solver multiPhaseInterFoam. The proposed approach is simple as it only depends on few physics-based parameters, thus implying less uncertainties than dense fluid models and more flexibility and computational efficiency than Euler?Euler approaches. This numerical framework is applied to reproduce three literature benchmark landslide-tsunami cases: two-dimensional (2D) submerged as well as 2D and threedimensional (3D) subaerial. Comparing numerical and experimental results, a good agreement is found for granular material behavior, while an overall very good (excellent in some cases) agreement is found as far as fluid behavior and waves characteristics are concerned, testifying that the momentum transfer between granular and fluid phases is well reproduced by this simple rheological model. Qualitative descriptions of the numerical results, in terms of landslide behavior, wave generation characteristics, and velocity field during the generation/propagation process are provided. Moreover, quantitative comparisons between experimental and numerical results by comparing landslide evolution, free surface elevation time series, and runup time series are presented and discussed in the article.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10902/30236
url https://hdl.handle.net/10902/30236
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Coastal Engineering, 2023, 186, 104391
reponame:UCrea Repositorio Abierto de la Universidad de Cantabria
instname:Universidad de Cantabria (UC)
instname_str Universidad de Cantabria (UC)
reponame_str UCrea Repositorio Abierto de la Universidad de Cantabria
collection UCrea Repositorio Abierto de la Universidad de Cantabria
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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