Type
ArticleAuthors
Fei, Wenbin
Narsilio, Guillermo A.

van der Linden, Joost H.
Tordesillas, Antoinette

Disfani, Mahdi M.

Santamarina, Carlos

KAUST Department
Energy Resources and Petroleum Engineering ProgramAli I. Al-Naimi Petroleum Engineering Research Center (ANPERC)
Physical Science and Engineering (PSE) Division
Date
2021-06-19Online Publication Date
2021-06-19Print Publication Date
2021-09Embargo End Date
2023-06-09Permanent link to this record
http://hdl.handle.net/10754/670120
Metadata
Show full item recordAbstract
Employing network science to understand particle interactions helps manufacture advanced materials with superior force transmission and heat transfer. However, knowledge of the dependence of networks on particle features such as shape is missing. This study computes particle shape ─ the average of three-dimensional sphericity and roundness, and multiscale network variables ─ degree, edge betweenness centrality and global clustering coefficient from unweighted/weighted contact and thermal networks ─ for three sands based on their X-ray computed tomography images. The dependence of network features on particle shape is explored for both individual particles and bulk sand samples. Results show that particle shape affects the degree in a network at sample and particle scales differently. In contrast, weighted edge betweenness centrality has a consistent inverse relationship with particle shape at both scales. The weighted edge betweenness centrality values from different samples consistently indicate that 20% of network edges (e.g., contacts) are responsible for 60% of the heat transfer in dry sands. Although unweighted edge betweenness centrality cannot reflect the heat transfer directly, it has a similar correlation with particle shape to the weighted feature. Global clustering coefficient from the thermal network increases in round particle packings and can indicate the mechanical rigidity of sands.Citation
Fei, W., Narsilio, G. A., van der Linden, J. H., Tordesillas, A., Disfani, M. M., & Santamarina, J. C. (2021). Impact of particle shape on networks in sands. Computers and Geotechnics, 137, 104258. doi:10.1016/j.compgeo.2021.104258Sponsors
The ARC DP210100433 project provides the basis for this work. The Imaging and Medical Beam Line (IMBL) at the Australian Synchrotron, Dr A Maksimenko and other beam scientists are acknowledged for their support via grants AS1/IMBL/15795 2020 and AS163/IM/11188.Publisher
Elsevier BVJournal
Computers and GeotechnicsAdditional Links
https://linkinghub.elsevier.com/retrieve/pii/S0266352X21002561ae974a485f413a2113503eed53cd6c53
10.1016/j.compgeo.2021.104258