1. General Model Information

Name: SATurated-Unsaturated flow and RadioNuclide transport

Acronym: SATURN


Main medium: terrestrial
Main subject: hydrology
Organization level: ecosystem
Type of model: partial differential equations
Main application:
Keywords: unsaturated flow, solute transport

Contact:

Lester,Barry
HSI GeoTrans
46050 Manekin Plaza, Suite 100, Sterling, VA 20166
Phone:
Fax:
email: info@hsigeotrans.com
Homepage: www.geotrans.com

Author(s):

Huyakorn, P.S., S.D. Thomas, J.W. Mercer, and B.H. Lester

Abstract:

SATURN (SATurated-Unsaturated flow and RadioNuclide transport) is a two-dimensional finite element model to simulate steady-state or transient, single phase fluid flow and advective-dispersive transport in fully- or partially saturated, anisotropic, heterogeneous porous media. The flow problem is solved using the Galerkin method to approximate the Richard's equation, and a fully implicit scheme for the time domain. The resulting nonlinear algebraic equations are solved using either the Picard or Newton-Raphson iterative techniques. Soil hydraulic functions are entered either in functional or tabular form. It uses the upstream-weighted residual method to treat the transport equation. It allows the use of both triangular and quadrilateral elements. Darcy fluxes are calculated in the center of the elements causing discontinuities in fluxes across elements and local mass balance inaccuracies.

Nodal coordinates for SATURN may be generated by SATURN itself (for simple rectangular geometry) or by STRPGN, a separate mesh generator.


II. Technical Information

II.1 Executables:

Operating System(s):

II.2 Source-code:

Programming Language(s): Fortran, proprietary

II.3 Manuals:



II.4 Data:



III. Mathematical Information


III.1 Mathematics


III.2 Quantities


III.2.1 Input

III.2.2 Output


IV. References



V. Further information in the World-Wide-Web


VI. Additional remarks

The codes UNSAT2, BIM2D/3D, TRUST, FEMWATER, TOUGH, SUTRA, SATURN, TRACR3D, and FLAMINCO are described and compared in: Yeh, T.C., T.C. Rasmussen and D.D. Evans. 1988. Simulation of Liquid and Vapor Movement in Unsaturated Fractured Rock at the Apache Leap Tuff Site: Models and Strategies. NUREG/CR-5097, U.S. Nuclear Regulatory Commission, Washington, D.C. This report includes a detailed description of the code characteristics and evaluates their applicability based on governing equations and code options.
Last review of this document by:
Status of the document:
last modified by Tobias Gabele Wed Aug 21 21:44:49 CEST 2002

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