The SECO suite of codes for site Performance Assessment

Conference · Mon Mar 01 04:00:00 EST 1993

OSTI ID:138767

Roache, P J ^[1]

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1. Ecodynamics Research Associates, Inc., Albuquerque, NM (United States)

Modeling for Performance Assessment of the Waste Isolation Pilot Plant (WIPP ) has led to development of the SECO suite of codes for groundwater flow, particle tracking, and transport. Algorithm and code developments include the following areas: facilitation of grid convergence tests in multiple domains; correct treatment of transmissivity factors for unconfined aquifers; efficient multigrid algorithms; a formulation of brine Darcy flow equations that uses freshwater head as the dependent able; boundary-fitted coordinates; temporal high order particle tracking; an efficient and accurate implicit Finite Volume TVD algorithm for radionuclide transport in (possibly) fractured porous media; accurate calculation of advection via a flux-based modified method of characteristics; and Quality Assurance procedures.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-76DP00789; AC04-94AL85000
• OSTI ID: 138767
• Report Number(s): SAND--93-7007; CONF-930408--32; ON: DE93008343
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
54 ENVIRONMENTAL SCIENCES
58 GEOSCIENCES
ALPHA-BEARING WASTES
BIODEGRADATION
CORROSION
FLUID FLOW
GROUND WATER
HYDROLOGY
MATHEMATICAL MODELS
RADIOLYSIS
UNDERGROUND STORAGE
WIPP