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Memorias de investigación
Artículos en revistas:
A Two Phases Sph Model For Debris Flow Propagation
Año:2018
Áreas de investigación
  • Aplicaciones a ingenierías y ciencias de la información,
  • Ingeniería civil y arquitectura
Datos
Descripción
This paper presents a model which can be used for fast landslides where coupling between solid and pore fluid plays a fundamental role. The proposed model is able to describe debris flows where the difference of velocities between solid grains and fluid is important. The approach is based on the mathematical model proposed by Zienkiewicz and Shiomi, which is similar to those of Pitman and Le and Pudasaini. The novelty of the present work is the numerical technique used, the smoothed particle hydrodynamics (SPH). We propose to use a double set of nodes for soil and water phases, the interaction between them being described by a suitable drag law. The paper presents both mathematical and numerical models, describing the main assumptions and their limitations. Then, the model is applied to (1) a simple case where shocks and expansion waves appear, (2) a dam break problem on a horizontal plane with a frictional soil phase, and (3) a debris flow which happened in Hong Kong. The main conclusions that can be drawn from the applications are: (i) Debris flows having 2 phases with important relative mobility present a rich structure of shocks and rarefaction waves, which has to be properly modeled. Otherwise, the model will have numerical damping or dispersion. (ii) Dambreak exercises provide interesting information in simple and controlled situations. We can see how both phases move relative to each other. (iii) Real debris flows can be simulated with the proposed model, obtaining reasonable results.
Internacional
Si
JCR del ISI
Si
Título de la revista
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
ISSN
0363-9061
Factor de impacto JCR
0,706
Información de impacto
Volumen
42
DOI
10.1002/nag.2748
Número de revista
3
Desde la página
418
Hasta la página
448
Mes
FEBRERO
Ranking
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Participantes
  • Autor: Manuel Tomas Pastor Perez (UPM)
  • Autor: Angel Yagüe Hernan (UPM)
  • Autor: Miguel Martin Stickle (UPM)
  • Autor: Diego Guillermo Manzanal Milano (UPM)
  • Autor: Pablo Mira
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Centro o Instituto I+D+i: Centro de Investigación en Simulación Computacional
  • Departamento: Matemática e Informática Aplicadas a la Ingenierías Civil y Naval
  • Departamento: Mecánica de Medios Continuos y Teoría de Estructuras
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