Optimal initial condition of a bentonite buffer with regard to thermal behavior in a high-level radioactive waste repository

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In this study, a numerical model was established using the coupled relationship between the initial conditions of dry density and thermal-hydraulic properties of the compacted bentonite buffer in high-level waste repositories. In addition, we applied the firefly algorithm to identify the optimal initial condition of the buffer, based on the numerical model. Results showed the minimum peak temperature was 77.89 degrees C at the optimal initial condition where the dry density was 1683 kg/m(3). The results were verified using the convergence test and parametric study. This finding gives a guideline for producing a bentonite buffer condition in the design of a repository.
Publisher
ELSEVIER SCI LTD
Issue Date
2018-12
Language
English
Article Type
Article
Citation

COMPUTERS AND GEOTECHNICS, v.104, pp.109 - 117

ISSN
0266-352X
DOI
10.1016/j.compgeo.2018.08.011
URI
http://hdl.handle.net/10203/246873
Appears in Collection
CE-Journal Papers(저널논문)
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