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U.S. Department of Energy
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The SECO suite of codes for site performance assessment. [Sandia-ECOdynamics]

Technical Report ·
OSTI ID:5412235
 [1]
  1. Ecodynamics Research Associates, 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 variable; 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:
DOE; USDOE, Washington, DC (United States)
DOE Contract Number:
AC04-94AL85000
OSTI ID:
5412235
Report Number(s):
SAND-93-7007; ON: DE94008829
Country of Publication:
United States
Language:
English