Radionuclide Transport through Dierent Routes near a Deposition Hole for Spent Nuclear Fuel

Radionuclide transport modeling is a part of the research concerning geological disposal of spent nuclear fuel. Typically, the transport models near a single deposition hole focus on the reactions of nuclides, while the model geometry and the ow of groundwater are often simplied. In this paper, instead, a radionuclide transport model in a detailed 3D geometry with no reactions is introduced. The aim is to study the eects of the geom- etry and realistic ow elds on the nuclide transport. The groundwater ow is modeled with the continuity equation and Darcy's law, whereas the mass transport problem of a nu- clide reduces to a general convection-diusi on problem. This paper focuses on development of the model instead of the nal results.