Nondestructive visualization and quantification of 3-D microstructure of granular materials and direct numerical simulations

Felix H. Kim, Dayakar Penumadu, Jens Gregor, Nikolay Kardjilov, Ingo Manke, Volker P. Schulz, Andreas Wiegmann

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

Abstract

This paper summarizes the key concepts from the recent published work of the authors on using both neutron and X-ray imaging techniques to study partially saturated sand and water flow through compacted sand. The goal of the manuscript is to serve as a review paper, building on discrete contributions from cited publications for geomechanics community as the topic is rather new and concepts are connected. For this study, neutron and micro-CT-based X-ray imaging was performed at Helmholtz-Zentrum-Berlin (HZB) in Germany. Due to different attenuation characteristics of neutrons and X-rays to three phases (silica, air, and water) of partially saturated sand, radiation-based images provide unique but complementary information in a nondestructive fashion. Water phase is very precisely identified with neutron radiation-based images, and sand (silica) phase is well identified with X-ray images. An automatic image registration technique is implemented to combine neutron and X-ray images in the same coordinates for a detailed quantitative evaluation of microstructural features in three dimensions. In situ imaging experiment of flow through compacted sand was performed based on the dual modality imaging concept. The initial 3-D pore geometry was obtained from dry compacted sand specimen by using x-ray. The water flow pattern was monitored by using time-lapsed neutron radiography and tomography after a target water injection step. The initial microstructure obtained with X-ray tomography is also used to perform direct numerical simulations. Experiments based on using neutron and X-ray imaging technique thus providing a unique opportunity to characterize partially saturated sand and investigate multiphase flow behavior through porous media. Direct numerical simulation based on realistic geometry can account for complex pore geometry including heterogeneity of the pore structure.

Original languageEnglish (US)
Title of host publicationGeo-Congress 2014 Technical Papers
Subtitle of host publicationGeo-Characterization and Modeling for Sustainability - Proceedings of the 2014 Congress
PublisherAmerican Society of Civil Engineers (ASCE)
Pages713-722
Number of pages10
Edition234 GSP
ISBN (Print)9780784413272
DOIs
StatePublished - Jan 1 2014
Event2014 Congress on Geo-Characterization and Modeling for Sustainability, Geo-Congress 2014 - Atlanta, GA, United States
Duration: Feb 23 2014Feb 26 2014

Publication series

NameGeotechnical Special Publication
Number234 GSP
ISSN (Print)0895-0563

Other

Other2014 Congress on Geo-Characterization and Modeling for Sustainability, Geo-Congress 2014
CountryUnited States
CityAtlanta, GA
Period2/23/142/26/14

Fingerprint

Granular materials
Direct numerical simulation
visualization
microstructure
Visualization
X rays
Neutrons
Microstructure
Sand
sand
simulation
Imaging techniques
geometry
tomography
Tomography
Geometry
Water
water flow
silica
Neutron radiography

All Science Journal Classification (ASJC) codes

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

Cite this

Kim, F. H., Penumadu, D., Gregor, J., Kardjilov, N., Manke, I., Schulz, V. P., & Wiegmann, A. (2014). Nondestructive visualization and quantification of 3-D microstructure of granular materials and direct numerical simulations. In Geo-Congress 2014 Technical Papers: Geo-Characterization and Modeling for Sustainability - Proceedings of the 2014 Congress (234 GSP ed., pp. 713-722). (Geotechnical Special Publication; No. 234 GSP). American Society of Civil Engineers (ASCE). https://doi.org/10.1061/9780784413272.069

Nondestructive visualization and quantification of 3-D microstructure of granular materials and direct numerical simulations. / Kim, Felix H.; Penumadu, Dayakar; Gregor, Jens; Kardjilov, Nikolay; Manke, Ingo; Schulz, Volker P.; Wiegmann, Andreas.

Geo-Congress 2014 Technical Papers: Geo-Characterization and Modeling for Sustainability - Proceedings of the 2014 Congress. 234 GSP. ed. American Society of Civil Engineers (ASCE), 2014. p. 713-722 (Geotechnical Special Publication; No. 234 GSP).

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

Kim, FH, Penumadu, D, Gregor, J, Kardjilov, N, Manke, I, Schulz, VP & Wiegmann, A 2014, Nondestructive visualization and quantification of 3-D microstructure of granular materials and direct numerical simulations. in Geo-Congress 2014 Technical Papers: Geo-Characterization and Modeling for Sustainability - Proceedings of the 2014 Congress. 234 GSP edn, Geotechnical Special Publication, no. 234 GSP, American Society of Civil Engineers (ASCE), pp. 713-722, 2014 Congress on Geo-Characterization and Modeling for Sustainability, Geo-Congress 2014, Atlanta, GA, United States, 2/23/14. https://doi.org/10.1061/9780784413272.069
Kim FH, Penumadu D, Gregor J, Kardjilov N, Manke I, Schulz VP et al. Nondestructive visualization and quantification of 3-D microstructure of granular materials and direct numerical simulations. In Geo-Congress 2014 Technical Papers: Geo-Characterization and Modeling for Sustainability - Proceedings of the 2014 Congress. 234 GSP ed. American Society of Civil Engineers (ASCE). 2014. p. 713-722. (Geotechnical Special Publication; 234 GSP). https://doi.org/10.1061/9780784413272.069
Kim, Felix H. ; Penumadu, Dayakar ; Gregor, Jens ; Kardjilov, Nikolay ; Manke, Ingo ; Schulz, Volker P. ; Wiegmann, Andreas. / Nondestructive visualization and quantification of 3-D microstructure of granular materials and direct numerical simulations. Geo-Congress 2014 Technical Papers: Geo-Characterization and Modeling for Sustainability - Proceedings of the 2014 Congress. 234 GSP. ed. American Society of Civil Engineers (ASCE), 2014. pp. 713-722 (Geotechnical Special Publication; 234 GSP).
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