1. General Model Information

Name: SilVlow - a program to solve the saturated-unsaturated porous media equation on two-dimensional domains

Acronym: SILVLOW

Main medium: terrestrial
Main subject: hydrology
Organization level: ecosystem
Type of model: not specified
Main application:
Keywords: unsaturated, saturated, water flow, two-dimensional, porous media, Richards equation, finite element numerics


Christoph Blendinger
Institut für angewandte Mathematik
Wegelerstr. 6
53115 Bonn (Germany)
Tel.: 0228/737864
email: blendi@iam.uni-bonn.de



The program silVlow was developed to solve the saturated-unsaturated porous media equation on two-dimensional domains and is realized hardware independent using ANSI-C. Special attention on applications in soil hydraulics is reflected in the boundary conditions and source terms. The numerical realization is based on backward time differences and a fully implicit fe-discretisation with linear elements on a user-defined triangular grid. This leads to symmetric systems which are solved by a pcg-method with a problem-adapted preconditioner. Augmented with an adaptive time step strategy one gets an efficient and flexible implementation.
Author of the abstract:

Christoph Blendinger

II. Technical Information

II.1 Executables:

Operating System(s):

II.2 Source-code:

Programming Language(s): Programming language: Ansi-C available, contact: Christoph Blendinger

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

Last review of this document by: T. Gabele: 08. 07. 1997
Status of the document:
last modified by Tobias Gabele Wed Aug 21 21:44:49 CEST 2002

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