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Article

A Coupled Modeling Simulator for Near-Field Processes in Cement Engineered Barrier Systems for Radioactive Waste Disposal

1
Quintessa Limited, Henley-on-Thames RG9 1HG, UK
2
QJ Science, Yokohama 221-0052, Japan
3
Kajima Corporation, Minato-ku, Tokyo 107-8502, Japan
4
JAEA, Tokai-Mura, Ibaraki 319-1194, Japan
*
Author to whom correspondence should be addressed.
Crystals 2020, 10(9), 767; https://doi.org/10.3390/cryst10090767
Received: 30 July 2020 / Revised: 27 August 2020 / Accepted: 28 August 2020 / Published: 29 August 2020
(This article belongs to the Special Issue Numerical Study of Concrete)
Details are presented of the development of a coupled modeling simulator for assessing the evolution in the near-field of a geological repository for radioactive waste disposal where concrete is used as a backfill. The simulator uses OpenMI, a standard for exchanging data between simulation software programs at run-time, to form a coupled chemical-mechanical-hydrogeological model of the system. The approach combines a tunnel scale stress analysis finite element model, a discrete element model for accurately modeling the patterns of emerging cracks in the concrete, and a finite element and finite volume model of the chemical processes and alteration in the porous matrix and cracks in the concrete, to produce a fully coupled model of the system. Combining existing detailed simulation software in this way with OpenMI has the benefit of not relying on simplifications that might be necessary to combine all of the modeled processes in a single piece of software. View Full-Text
Keywords: radioactive waste; long-term performance; degradation; modeling; finite element analysis radioactive waste; long-term performance; degradation; modeling; finite element analysis
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MDPI and ACS Style

Benbow, S.J.; Kawama, D.; Takase, H.; Shimizu, H.; Oda, C.; Hirano, F.; Takayama, Y.; Mihara, M.; Honda, A. A Coupled Modeling Simulator for Near-Field Processes in Cement Engineered Barrier Systems for Radioactive Waste Disposal. Crystals 2020, 10, 767. https://doi.org/10.3390/cryst10090767

AMA Style

Benbow SJ, Kawama D, Takase H, Shimizu H, Oda C, Hirano F, Takayama Y, Mihara M, Honda A. A Coupled Modeling Simulator for Near-Field Processes in Cement Engineered Barrier Systems for Radioactive Waste Disposal. Crystals. 2020; 10(9):767. https://doi.org/10.3390/cryst10090767

Chicago/Turabian Style

Benbow, Steven J., Daisuke Kawama, Hiroyasu Takase, Hiroyuki Shimizu, Chie Oda, Fumio Hirano, Yusuke Takayama, Morihiro Mihara, and Akira Honda. 2020. "A Coupled Modeling Simulator for Near-Field Processes in Cement Engineered Barrier Systems for Radioactive Waste Disposal" Crystals 10, no. 9: 767. https://doi.org/10.3390/cryst10090767

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