Naslov
Three-dimensional numerical simulation by upscaling of gas migration through engineered and geological barriers for a deep repository for radioactive waste

Autori
Ahusborde, Etienne ; Amaziane, Brahim ; Jurak, Mladen

Vrsta, podvrsta i kategorija rada
Poglavlja u knjigama, znanstveni

Knjiga
Gas Generation and Migration in Deep Geological Radioactive Waste Repositories

Urednik/ci
Shaw, R.P.

Izdavač
The Geological Society

Grad
London : Delhi

Godina
2015

Raspon stranica
121-141

ISBN
978-1-86239-722-4

ISSN
0305-8719

Ključne riječi
nuclear waste repository ; upscaling ; finite-volume method ; multiphase flow

Sažetak
This paper presents the results of a benchmark study that compares a number of numerical models applied to a specific problem in the context of hydrogen flow and transport in a nuclear waste repository. The processes modelled are two-phase (water and hydrogen) immiscible compressible two-component transient flow in a heterogeneous porous medium under isothermal conditions. The three-dimensional (3D) model represents a module of a repository for high-level waste in a clay host rock. An upscaling technique and a vertex-centred finite-volume method are employed to yield very accurate solutions. Since the full range of results required in the benchmark is too large to be displayed in this paper, we focus on the evolution of the pressures, the saturations, the fluxes and the comparison of the numerical results with the other participants. A homemade C++ upscaling code and the parallel multiphase flow simulator DuMuX have been adopted for this study.

Izvorni jezik
Engleski

Znanstvena područja
Matematika

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