Transport of radionuclides released from a multiple-patch source into a planar fracture with transverse hydrodynamic dispersion

Conference · Thu Jan 01 04:00:00 EST 1987 · Trans. Am. Nucl. Soc.; (United States)

OSTI ID:5459007

Ahn, J; Chambre, P L; Pigford, T H; Lee, W W.L.

Fractures are considered a main path for hydrological transport of radionuclides released in a geologic repository. Although actual fractures form a complex network, single-fracture transport models are useful in predicting travel time and concentrations of released nuclides. Analytical solutions for one-dimensional transport in a single fracture with molecular diffusion in the surrounding rock matrix have been shown for the cases with and without longitudinal hydrodynamic dispersion in the fracture for a source of infinite width. In reality, however, when multiple waste packages of finite size are exposed to a fracture, the released radionuclides will spread due to hydrodynamic dispersion transverse to the flow direction. To show these effects, the authors present analytical solutions and numerical illustrations for the space-time-dependent concentrations of radionuclides released from finite patch sources into a planar fracture with transverse dispersion and matrix diffusion.

• Research Organization: Univ. of California, Berkeley
• OSTI ID: 5459007
• Report Number(s): CONF-870601-Summs.
• Conference Information: Journal Name: Trans. Am. Nucl. Soc.; (United States) Journal Volume: 54
• Country of Publication: United States
• Language: English

Related Subjects

052002* -- Nuclear Fuels-- Waste Disposal & Storage
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ENVIRONMENTAL TRANSPORT
FAILURES
FLUID MECHANICS
FRACTURES
HIGH-LEVEL RADIOACTIVE WASTES
HYDRODYNAMICS
LEAKS
MANAGEMENT
MASS TRANSFER
MATERIALS
MECHANICS
ONE-DIMENSIONAL CALCULATIONS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE DISPOSAL
RADIOACTIVE WASTES
RADIONUCLIDE MIGRATION
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES