Comparison of Two Depth Averaged Numerical Models for Debris Flow Runout Estimation

Vagnon, Federico and Pirulli, Marina and Yagüe Hernán, Ángel and Pastor Pérez, Manuel Tomás (2019). Comparison of Two Depth Averaged Numerical Models for Debris Flow Runout Estimation. "Canadian Geotechnical Journal", v. 56 (n. 1); pp. 89-101. ISSN 1208-6010. https://doi.org/10.1139/cgj-2017-0455.

Description

Title: Comparison of Two Depth Averaged Numerical Models for Debris Flow Runout Estimation
Author/s:
  • Vagnon, Federico
  • Pirulli, Marina
  • Yagüe Hernán, Ángel
  • Pastor Pérez, Manuel Tomás
Item Type: Article
Título de Revista/Publicación: Canadian Geotechnical Journal
Date: January 2019
ISSN: 1208-6010
Volume: 56
Subjects:
Freetext Keywords: Debris Flow, Runout Estimation, RASH3D Code, GeoFlow_SPH Code, Continuum Numerical Modelling
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Matemática e Informática Aplicadas a la Ingenierías Civil y Naval
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (3MB) | Preview

Abstract

This paper analyses an important aspect of the continuum numerical modeling of rapid landslides as debris flows: by using the same rheological parameter values, are the results, obtained with codes that implement the same constitutive equations but a different numerical solver, equal? In order to answer this question, the two numerical codes RASH3D and GeoFlow_SPH are here used to back-analyze the debris flow event occurred in the Nora stream (Northwestern Italian Alps) in October 2000. Comparison of results evidenced that the RASH3D best fit rheological values for the Nora event back analysis overestimated both the final depositional heights and the simulated flow velocities if used in GeoFlow_SPH. In order to obtain thickness values comparable with those measured in situ, it was necessary to re-calibrate GeoFlow_SPH rheological parameter values. In this way, with the exception of a larger lateral spreading of the sliding mass given by RASH3D, both thickness and velocity values were similar for the two numerical codes.

More information

Item ID: 57560
DC Identifier: http://oa.upm.es/57560/
OAI Identifier: oai:oa.upm.es:57560
DOI: 10.1139/cgj-2017-0455
Official URL: https://doi.org/10.1139/cgj-2017-0455
Deposited by: Memoria Investigacion
Deposited on: 29 Mar 2020 13:31
Last Modified: 30 Mar 2020 06:09
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM