Coupled Fluid Energy Solute Transport

Software · Thu Feb 13 00:00:00 EST 1992

DOI:https://doi.org/10.11578/dc.20180614.14· OSTI ID:1230110 · Code ID:12044

Monti, Amy; Cole, Charles; Kincaid, Charles; Gupta, Sumant

CFEST is a Coupled Fluid, Energy, and Solute Transport code for the study of a multilayered, nonisothermal ground-water system. It can model discontinuous as well as continuous layers, time-dependent and constant source/sinks, and transient as well as steady-state flow. The finite element method is used for analyzing isothermal and nonisothermal events in a confined aquifer system. Only single-phase Darcian flow is considered. In the Cartesian coordinate system, flow in a horizontal plane, in a vertical plane, or in a fully three-dimensional region can be simulated. An option also exists for the axisymmetric analysis of a vertical cross section. The code employs bilinear quadrilateral elements in all two dimensional analyses and trilinear quadrilateral solid elements in three dimensional simulations. The CFEST finite element formulation can approximate discontinuities, major breaks in slope or thickness, and fault zones in individual hydrogeologic units. The code accounts for heterogeneity in aquifer permeability and porosity and accommodates anisotropy (collinear with the Cartesian coordinates). The variation in the hydraulic properties is described on a layer-by-layer basis for the different hydrogeologic units. Initial conditions can be prescribed hydraulic head or pressure, temperature, or concentration. CFEST can be used to support site, repository, and waste package subsystem assessments. Some specific applications are regional hydrologic characterization; simulation of coupled transport of fluid, heat, and salinity in the repository region; consequence assessment due to natural disruption or human intrusion scenarios in the repository region; flow paths and travel-time estimates for transport of radionuclides; and interpretation of well and tracer tests.

• Short Name / Acronym: CFEST1.1
• Project Type: Closed Source
• Site Accession Number: 891
• Software Type: Scientific
• Research Organization: Battelle Columbus Laboratories
• Sponsoring Organization: DOE/RW

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  Primary Award/Contract Number:

  AC06-76RL01830
• DOE Contract Number: AC06-76RL01830
• Code ID: 12044
• OSTI ID: 1230110
• Country of Origin: United States