Numerical modeling and analysis of suffusion patterns for granular soils

Hui Tao, Junliang Tao

Research output: Contribution to journalConference article

Abstract

Migration of fine particles through constrictions between coarser fabrics by seepage force is the process termed suffusion. A coarser soil structure resulted from fines loss will lead to change in hydraulic and mechanical properties such as increased permeability, decreased strength and stability which can cause significant settlement or failure of the levees, embankments and dams. This paper presents a coupled Computational Fluid Dynamics and Discrete Element Method (CFD-DEM) approach to model the suffusion process. The concept of transition layer is defined and used to explain the suffusion process and patterns. The effects of particle size distribution, seepage velocity, fines content and initial void ratio on the transition layer in suffusion are investigated.

Original languageEnglish (US)
Pages (from-to)487-496
Number of pages10
JournalGeotechnical Special Publication
Issue numberGSP 280
DOIs
StatePublished - Jan 1 2017
Externally publishedYes
EventGeotechnical Frontiers 2017 - Orlando, United States
Duration: Mar 12 2017Mar 15 2017

Fingerprint

Seepage
Soils
Levees
seepage
Embankments
Finite difference method
Particle size analysis
Dams
modeling
Computational fluid dynamics
discrete element method
soil
void ratio
Hydraulics
hydraulic property
computational fluid dynamics
soil structure
embankment
Mechanical properties
mechanical property

ASJC Scopus subject areas

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

Cite this

Numerical modeling and analysis of suffusion patterns for granular soils. / Tao, Hui; Tao, Junliang.

In: Geotechnical Special Publication, No. GSP 280, 01.01.2017, p. 487-496.

Research output: Contribution to journalConference article

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