A comparison of different methods to compute the constriction size distribution for granular fi lters

Jessica Sjah, E. Vincens

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

This paper presents a numerical study of techniques able to provide the constriction size distribution for granular materials. The cumulative constriction size distribution curve is critical to understand the behaviour of fi lters in earth dams. In this study, we compare three different methods able to provide the constriction size distribution for spherical materials: a DEMDT (Discrete Element Method + Delaunay Tessellation), an analytical method and an inverse method based on numerical experiments of fi ltration tests. The analytical method which is simple of use provides a result close to the DEMTD but needs to be adapted for actual materials. The grading of the fi ne materials used for fi ltration tests in the inverse method seems to play an important role in the derived constriction size distribution. A procedure is proposed for the chose of the grading for the fi ne material on the basis of a parametric study.

Original languageEnglish
Title of host publicationComputer Methods for Geomechanics
Subtitle of host publicationFrontiers and New Applications
Pages713-720
Number of pages8
Publication statusPublished - 1 Dec 2011
Event13th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2011 - Melbourne, VIC, Australia
Duration: 9 May 201111 May 2011

Publication series

NameComputer Methods for Geomechanics: Frontiers and New Applications
Volume2

Conference

Conference13th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2011
CountryAustralia
CityMelbourne, VIC
Period9/05/1111/05/11

Keywords

  • Constrictions
  • Delaunay tessellation
  • Discrete Element Method
  • Fi ltration
  • Granular material
  • Void size distributions

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