Characterisation of conduction phenomena in soils at the particle-scale

Finite element analyses in conjunction with synthetic 3D imaging

Guillermo A. Narsilio, Jeremy Kress, Tae Sup Yun

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This paper describes an innovative method to characterise conduction parameters in geomaterials at the particle-scale. The technique is exemplified using 3D synthetic grain packing generated with discrete element approaches. This creates a geo-mechanically viable user-defined 3D granular image through which the particle skeleton and the corresponding pore network are constructed. Images are then imported into the finite element analyses to solve the governing equations of hydraulic and thermal conduction. Navier-Stokes equation is uniquely upscaled to Darcy's law to assess hydraulic conductivity in soils, while a similar approach implements the Fourier equation to evaluate thermal conduction through grain chains and pore network. High performance computing is used to meet demanding numerical calculations of 3D meshed geometries. Packing density (i.e., porosity) and inter-particle contact areas are explored as variables to highlight the effects of pore volume and inter-particle contact condition in hydraulic and thermal conduction. This emerging technique allows not only characterising the macro-scale behaviour of conduction phenomena in soils but also quantifying and visualising the preferential and local conduction behaviour at the particle-scale. Laboratory measurements of hydraulic and thermal conductivities support numerically obtained results and validate the viability of the new methods used herein. This study introduces an alternative way to determine physical parameters of soils using emerging technology of rigorous numerical simulations in conjunction with 3D images, and to enable fundamental observation of particle-scale mechanisms of macro-scale manifestation.

Original languageEnglish
Pages (from-to)828-836
Number of pages9
JournalComputers and Geotechnics
Volume37
Issue number7-8
DOIs
Publication statusPublished - 2010 Nov 1

Fingerprint

Hydraulic conductivity
Soils
Imaging techniques
Macros
Hydraulics
soil
Density (specific gravity)
Contacts (fluid mechanics)
Navier Stokes equations
hydraulic conductivity
Thermal conductivity
Porosity
hydraulics
Darcy law
Geometry
Computer simulation
Navier-Stokes equations
thermal conductivity
skeleton
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Computer Science Applications

Cite this

@article{4584412e25ab40b7871e76134f7e6193,
title = "Characterisation of conduction phenomena in soils at the particle-scale: Finite element analyses in conjunction with synthetic 3D imaging",
abstract = "This paper describes an innovative method to characterise conduction parameters in geomaterials at the particle-scale. The technique is exemplified using 3D synthetic grain packing generated with discrete element approaches. This creates a geo-mechanically viable user-defined 3D granular image through which the particle skeleton and the corresponding pore network are constructed. Images are then imported into the finite element analyses to solve the governing equations of hydraulic and thermal conduction. Navier-Stokes equation is uniquely upscaled to Darcy's law to assess hydraulic conductivity in soils, while a similar approach implements the Fourier equation to evaluate thermal conduction through grain chains and pore network. High performance computing is used to meet demanding numerical calculations of 3D meshed geometries. Packing density (i.e., porosity) and inter-particle contact areas are explored as variables to highlight the effects of pore volume and inter-particle contact condition in hydraulic and thermal conduction. This emerging technique allows not only characterising the macro-scale behaviour of conduction phenomena in soils but also quantifying and visualising the preferential and local conduction behaviour at the particle-scale. Laboratory measurements of hydraulic and thermal conductivities support numerically obtained results and validate the viability of the new methods used herein. This study introduces an alternative way to determine physical parameters of soils using emerging technology of rigorous numerical simulations in conjunction with 3D images, and to enable fundamental observation of particle-scale mechanisms of macro-scale manifestation.",
author = "Narsilio, {Guillermo A.} and Jeremy Kress and Yun, {Tae Sup}",
year = "2010",
month = "11",
day = "1",
doi = "10.1016/j.compgeo.2010.07.002",
language = "English",
volume = "37",
pages = "828--836",
journal = "Computers and Geotechnics",
issn = "0266-352X",
publisher = "Elsevier BV",
number = "7-8",

}

Characterisation of conduction phenomena in soils at the particle-scale : Finite element analyses in conjunction with synthetic 3D imaging. / Narsilio, Guillermo A.; Kress, Jeremy; Yun, Tae Sup.

In: Computers and Geotechnics, Vol. 37, No. 7-8, 01.11.2010, p. 828-836.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Characterisation of conduction phenomena in soils at the particle-scale

T2 - Finite element analyses in conjunction with synthetic 3D imaging

AU - Narsilio, Guillermo A.

AU - Kress, Jeremy

AU - Yun, Tae Sup

PY - 2010/11/1

Y1 - 2010/11/1

N2 - This paper describes an innovative method to characterise conduction parameters in geomaterials at the particle-scale. The technique is exemplified using 3D synthetic grain packing generated with discrete element approaches. This creates a geo-mechanically viable user-defined 3D granular image through which the particle skeleton and the corresponding pore network are constructed. Images are then imported into the finite element analyses to solve the governing equations of hydraulic and thermal conduction. Navier-Stokes equation is uniquely upscaled to Darcy's law to assess hydraulic conductivity in soils, while a similar approach implements the Fourier equation to evaluate thermal conduction through grain chains and pore network. High performance computing is used to meet demanding numerical calculations of 3D meshed geometries. Packing density (i.e., porosity) and inter-particle contact areas are explored as variables to highlight the effects of pore volume and inter-particle contact condition in hydraulic and thermal conduction. This emerging technique allows not only characterising the macro-scale behaviour of conduction phenomena in soils but also quantifying and visualising the preferential and local conduction behaviour at the particle-scale. Laboratory measurements of hydraulic and thermal conductivities support numerically obtained results and validate the viability of the new methods used herein. This study introduces an alternative way to determine physical parameters of soils using emerging technology of rigorous numerical simulations in conjunction with 3D images, and to enable fundamental observation of particle-scale mechanisms of macro-scale manifestation.

AB - This paper describes an innovative method to characterise conduction parameters in geomaterials at the particle-scale. The technique is exemplified using 3D synthetic grain packing generated with discrete element approaches. This creates a geo-mechanically viable user-defined 3D granular image through which the particle skeleton and the corresponding pore network are constructed. Images are then imported into the finite element analyses to solve the governing equations of hydraulic and thermal conduction. Navier-Stokes equation is uniquely upscaled to Darcy's law to assess hydraulic conductivity in soils, while a similar approach implements the Fourier equation to evaluate thermal conduction through grain chains and pore network. High performance computing is used to meet demanding numerical calculations of 3D meshed geometries. Packing density (i.e., porosity) and inter-particle contact areas are explored as variables to highlight the effects of pore volume and inter-particle contact condition in hydraulic and thermal conduction. This emerging technique allows not only characterising the macro-scale behaviour of conduction phenomena in soils but also quantifying and visualising the preferential and local conduction behaviour at the particle-scale. Laboratory measurements of hydraulic and thermal conductivities support numerically obtained results and validate the viability of the new methods used herein. This study introduces an alternative way to determine physical parameters of soils using emerging technology of rigorous numerical simulations in conjunction with 3D images, and to enable fundamental observation of particle-scale mechanisms of macro-scale manifestation.

UR - http://www.scopus.com/inward/record.url?scp=78349309347&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78349309347&partnerID=8YFLogxK

U2 - 10.1016/j.compgeo.2010.07.002

DO - 10.1016/j.compgeo.2010.07.002

M3 - Article

VL - 37

SP - 828

EP - 836

JO - Computers and Geotechnics

JF - Computers and Geotechnics

SN - 0266-352X

IS - 7-8

ER -