Modeling bubble flow in fracture with lattice Boltzmann model
Résumé
In the framework of radioactive waste disposal studies, behavior
of hydrogen produced through anaerobic corrosion of the steel canisters is a
key point. At the near and far field scale, the migration process of hydrogen
is modeled using macroscopic two-phase flow models requiring macroscopic
data like relative permeability curves. As relative permeability curves for very
low permeable media are difficult to measure experimentally, two-phase flow
modelling at the pore scale appears as an interesting tool. The objective of this
paper is to present a Lattice Boltzmann approach used to model two-phase
flow in fractures with apertures of a few micrometers in aperture and some
elementary simulations of bubble flow allowing to understand the behavior of
two-phase flow in very low gas saturation context
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