Visualizing the Role of Particle Shape on 2D Inter-Particle Fluid Flow Using a Transparent Soil Surrogate

Linzhu Li, Mehdi Omidvar, Stephan Bless, Magued Iskander

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

Abstract

Many geotechnical applications benefit from advanced analysis of flow through porous media, such as filter and drain design, internal erosion and piping, and liquefaction, among others. In this study, a novel method is presented to visualize key components of fluid flow through pores of a saturated synthetic transparent granular media representing natural sand. Images of sand particles were captured using a dynamic image analyzer. 3D printing was then used to produce 2D extruded scaled models of representative particles that were used as casts to produce transparent extruded particles made of polyacrylamide hydrogel. Planar (i.e., plane strain) models having controlled porosity were prepared. Steady-state flow was established through the soil model, from which high-resolution images were captured. Image analysis methods were then used to visualize the flow field in the interstitial fluid. In order to capture the fluid flow, the pore fluid was seeded with highly reflective silver-coated hollow micro-spheres. A laser light source was used to illuminate a plane within the model. Particle image velocimetry (PIV) was employed for visualizing inter-particle fluid flow fields. The method allowed for investigating soil-fluid interactions of scaled hydrogel Ottawa sand and angular sand.

Original languageEnglish (US)
Title of host publicationGeotechnical Special Publication
EditorsJoseph T. Coe, Sanjeev Kumar, Miguel A. Pando, Christopher L. Meehan
PublisherAmerican Society of Civil Engineers (ASCE)
Pages618-627
Number of pages10
EditionGSP 310
ISBN (Electronic)9780784482070, 9780784482087, 9780784482094, 9780784482100, 9780784482117, 9780784482124, 9780784482131, 9780784482148, 9780784482155, 9780784482162
DOIs
StatePublished - Jan 1 2019
Event8th International Conference on Case Histories in Geotechnical Engineering: Geotechnical Materials, Modeling, and Testing, Geo-Congress 2019 - Philadelphia, United States
Duration: Mar 24 2019Mar 27 2019

Publication series

NameGeotechnical Special Publication
NumberGSP 310
Volume2019-March
ISSN (Print)0895-0563

Conference

Conference8th International Conference on Case Histories in Geotechnical Engineering: Geotechnical Materials, Modeling, and Testing, Geo-Congress 2019
CountryUnited States
CityPhiladelphia
Period3/24/193/27/19

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ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

Cite this

Li, L., Omidvar, M., Bless, S., & Iskander, M. (2019). Visualizing the Role of Particle Shape on 2D Inter-Particle Fluid Flow Using a Transparent Soil Surrogate. In J. T. Coe, S. Kumar, M. A. Pando, & C. L. Meehan (Eds.), Geotechnical Special Publication (GSP 310 ed., pp. 618-627). (Geotechnical Special Publication; Vol. 2019-March, No. GSP 310). American Society of Civil Engineers (ASCE). https://doi.org/10.1061/9780784482124.063