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Viewing fluid flow inside a granular medium

  • Nicoletta Sanvitale*
  • , Elisabeth T. Bowman
  • , Jonathan A. Black
  • *Corresponding author for this work

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

Abstract

This paper describes preliminary tests from a ‘transparent soil permeameter’ that has been developed to study the mechanisms that occur during internal erosion in filter materials for embankment dams. The laboratory-based experiments utilise an optical approach where glass particles are used in place of soil, and optically matched oil is used in place of water. The refractive index matching of the fluid and solid enables a two-dimensional “slice” or plane of particles and fluid to be viewed inside the permeameter, away from its walls via a laser sheet and captured by digital camera. The developed set up has already been tested and showed that optically matched glass and oil can behave similarly to soil and water materials as used in previous laboratory testing. In this study we present a flow characterization within a refractive index matched medium made of glass beads. To this end a small amount of fluid tracers is seeded inside the fluid and the velocity field inside the porous media is obtained using PIV measurements.

Original languageEnglish
Title of host publicationInternal erosion in earthdams, dikes and levees: proceedings of EWG‐IE 26th Annual Meeting 2018
EditorsStéphane Bonelli, Cristina Jommi, Donatella Sterpi
PublisherSpringer Cham
Pages91-97
ISBN (Electronic)9783319994239
ISBN (Print)9783319994222, 9783030076009
DOIs
Publication statusPublished - 01 Sept 2018
Externally publishedYes
Event26th Annual Meeting of the European Working Group on Internal Erosion - Milan, Italy
Duration: 10 Sept 201813 Sept 2018
https://www.eko.polimi.it/index.php/EWGIE2018/2018

Publication series

NameLecture Notes in Civil Engineering
Volume17
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

Conference26th Annual Meeting of the European Working Group on Internal Erosion
Abbreviated titleEWG-IE
Country/TerritoryItaly
CityMilan
Period10/09/201813/09/2018
Internet address

Keywords

  • Internal erosion
  • Laboratory tests
  • Pore velocity
  • Seepage

ASJC Scopus subject areas

  • Civil and Structural Engineering

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