One-Dimensional Radionuclide Transport Under Time-Varying Conditions

by F. Gelbard, Sandia Natl Lab, United States,
D. E. Longsine, Sandia Natl Lab, United States,
N. E. Olague, Sandia Natl Lab, United States,

Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1990


New analytical and numerical solutions are presented for one-dimensional radionuclide transport under time-varying fluid-flow conditions including radioactive decay. The analytical solution assumes that all radionuclides have identical retardation factors, and is limited to instantaneous releases. The numerical solution does not have these limitations, but is tested against the limiting case given for the analytical solution. Reasonable agreement between the two solutions was found. Examples are given for the transport of a three-member radionuclide chain transported over distances and flow rates comparable to those reported for Yucca Mountain, the proposed disposal site for high-level nuclear waste.

Subject Headings: Radioactive materials | Numerical analysis | Fluid flow | Radioactive wastes | Transport rates | Computer software | Waste disposal | Dimensional analysis | Nevada | United States

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