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Investigation of strain-sensitive properties of porous media through micro-CT imaging and numerical modelling

Shan Zhong, Xiangyun Ge Orcid Logo, Hywel Thomas Orcid Logo, Chenfeng Li Orcid Logo

Computers and Geotechnics, Volume: 174, Start page: 106560

Swansea University Authors: Shan Zhong, Hywel Thomas Orcid Logo, Chenfeng Li Orcid Logo

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DOI (Published version): 10.1016/j.compgeo.2024.106560

Abstract

Strain-sensitive characteristics of porous media are studied through micro-CT imaging and numerical simulations. First, high-fidelity Discrete Element Method (DEM) models are constructed for practical porous media based on micro-CT images. These DEM models prioritize the overall system morphology ov...

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Published in: Computers and Geotechnics
ISSN: 0266-352X
Published: Elsevier BV 2024
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URI: https://cronfa.swan.ac.uk/Record/cronfa67079
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spelling v2 67079 2024-07-12 Investigation of strain-sensitive properties of porous media through micro-CT imaging and numerical modelling 4005aa417c700af0a994fc251684e803 Shan Zhong Shan Zhong true false 08ebc76b093f3e17fed29281f5cb637e 0000-0002-3951-0409 Hywel Thomas Hywel Thomas true false 82fe170d5ae2c840e538a36209e5a3ac 0000-0003-0441-211X Chenfeng Li Chenfeng Li true false 2024-07-12 Strain-sensitive characteristics of porous media are studied through micro-CT imaging and numerical simulations. First, high-fidelity Discrete Element Method (DEM) models are constructed for practical porous media based on micro-CT images. These DEM models prioritize the overall system morphology over individual grain/particle shapes, ensuring robustness and flexibility controlled by easily adjustable algorithm parameters. Subsequently, we validate the accuracy of our proposed DEM models by comparing them with the Finite Element Method (FEM), achieving consistent agreement across all test cases. Finally, the CT-image based DEM approach is employed to investigate strain-sensitive properties of porous media, such as permeability, porosity, tortuosity, specific surface area, and fractal dimension. With a primary focus on transport and morphology properties, our approach is versatile and applicable to exploring various other properties of porous media. This study introduces a generic methodology for examining practical porous media under in-situ conditions, providing valuable insights into their response to stress and deformation. Journal Article Computers and Geotechnics 174 106560 Elsevier BV 0266-352X Rocks and porous media, In-situ property prediction, Image-based simulation, Discrete Element Method, Stress and strain, Deformation, Contact and fracture 1 10 2024 2024-10-01 10.1016/j.compgeo.2024.106560 http://dx.doi.org/10.1016/j.compgeo.2024.106560 COLLEGE NANME COLLEGE CODE Swansea University SU Library paid the OA fee (TA Institutional Deal) The authors would like to thank the support from the China Scholarship Council, Swansea University, United Kingdom, and the Royal Society, United Kingdom. ( IEC\NSFC\191628) IEC\NSFC\191628 2024-07-15T12:00:09.1698866 2024-07-12T09:35:08.3529780 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering Shan Zhong 1 Xiangyun Ge 0000-0002-6743-6306 2 Hywel Thomas 0000-0002-3951-0409 3 Chenfeng Li 0000-0003-0441-211X 4
title Investigation of strain-sensitive properties of porous media through micro-CT imaging and numerical modelling
spellingShingle Investigation of strain-sensitive properties of porous media through micro-CT imaging and numerical modelling
Shan Zhong
Hywel Thomas
Chenfeng Li
title_short Investigation of strain-sensitive properties of porous media through micro-CT imaging and numerical modelling
title_full Investigation of strain-sensitive properties of porous media through micro-CT imaging and numerical modelling
title_fullStr Investigation of strain-sensitive properties of porous media through micro-CT imaging and numerical modelling
title_full_unstemmed Investigation of strain-sensitive properties of porous media through micro-CT imaging and numerical modelling
title_sort Investigation of strain-sensitive properties of porous media through micro-CT imaging and numerical modelling
author_id_str_mv 4005aa417c700af0a994fc251684e803
08ebc76b093f3e17fed29281f5cb637e
82fe170d5ae2c840e538a36209e5a3ac
author_id_fullname_str_mv 4005aa417c700af0a994fc251684e803_***_Shan Zhong
08ebc76b093f3e17fed29281f5cb637e_***_Hywel Thomas
82fe170d5ae2c840e538a36209e5a3ac_***_Chenfeng Li
author Shan Zhong
Hywel Thomas
Chenfeng Li
author2 Shan Zhong
Xiangyun Ge
Hywel Thomas
Chenfeng Li
format Journal article
container_title Computers and Geotechnics
container_volume 174
container_start_page 106560
publishDate 2024
institution Swansea University
issn 0266-352X
doi_str_mv 10.1016/j.compgeo.2024.106560
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering
url http://dx.doi.org/10.1016/j.compgeo.2024.106560
document_store_str 0
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description Strain-sensitive characteristics of porous media are studied through micro-CT imaging and numerical simulations. First, high-fidelity Discrete Element Method (DEM) models are constructed for practical porous media based on micro-CT images. These DEM models prioritize the overall system morphology over individual grain/particle shapes, ensuring robustness and flexibility controlled by easily adjustable algorithm parameters. Subsequently, we validate the accuracy of our proposed DEM models by comparing them with the Finite Element Method (FEM), achieving consistent agreement across all test cases. Finally, the CT-image based DEM approach is employed to investigate strain-sensitive properties of porous media, such as permeability, porosity, tortuosity, specific surface area, and fractal dimension. With a primary focus on transport and morphology properties, our approach is versatile and applicable to exploring various other properties of porous media. This study introduces a generic methodology for examining practical porous media under in-situ conditions, providing valuable insights into their response to stress and deformation.
published_date 2024-10-01T12:00:08Z
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score 11.016235

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