High-resolution modelling of axisymmetric granular column collapse using parallelized SPH

Edward Yang, Ha H. Bui, Giang D. Nguyen, Abdelmalek Bouazza, Hans De Sterck

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

Granular flows are relevant to a variety of engineering applications from risk management of natural phenomena such as landslides and rock avalanches, to flow of pills in the pharmaceutical industry. The granular column collapse is an important experiment to study because of the exhibition of both solid and fluid-like behaviours of granular material. Here we present the continuum simulation of axisymmetric granular column collapse for aspect ratios up to 30 by using two constitutive relations: an elasto-plastic model with Drucker-Prager yield criterion, and the μ(I) rheological model for dense granular flows. Both models are implemented into a Smoothed Particle Hydrodynamics (SPH) code parallelised for CPU clusters with thousands of cores. While very good agreement with experimental data has been reported for both models for small and intermediate aspect ratios, the large-scale simulations conducted for large aspect ratios show that the Drucker-Prager model tends to over-predict final deposit height, and the (I) model under-predicts it. The differences in flow behaviour and final deposit morphology appear to be largely due to the different volumetric behaviour of the models, as well as the rate independence of the elasto-plastic approach whereas the μ(I) model is rate dependent.

Original languageEnglish
Title of host publicationChallenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 2
EditorsMarco Barla, Alice Di Donna, Donatella Sterpi
PublisherSpringer
Pages515-523
Number of pages9
ISBN (Print)9783030645175
DOIs
Publication statusPublished - 2021
EventInternational Conference of the International Association for Computer Methods and Advances in Geomechanics 2021 - Turin, Italy
Duration: 5 May 20218 May 2021
Conference number: 16th
https://link.springer.com/book/10.1007/978-3-030-64518-2 (Proceedings)
https://www.issmge.org/events/16th-international-conference-of-the-international-association-for-computer-methods-and-advances-in-geomechanics-iacmag (Website)

Publication series

NameLecture Notes in Civil Engineering
Volume126
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

ConferenceInternational Conference of the International Association for Computer Methods and Advances in Geomechanics 2021
Abbreviated titleIACMAG 2021
CountryItaly
CityTurin
Period5/05/218/05/21
Internet address

Keywords

  • Geomaterial
  • Granular column collapse
  • Granular flow
  • Smoothed particle hydrodynamics

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