Simple Project file description

program's output

debug: Project configuration from file '../../quad_20x10_GroundWaterFlow/quad_20x10_GroundWaterFlow.prj' read.
debug: Reading geometry file '../../quad_20x10_GroundWaterFlow/quad_20x10_left_right.gml'.
info: Geometry "quad_20x10_left_right_geometry" built. 4 points added.
info: 2 polylines added.
info: Reading VTU mesh finished.
info: Name: quad_20x10_constMat0.mesh
info: Nr. Nodes: 325
info: Nr. Elements: 288
debug: Parse process variables:
debug: Constructing process variable pressure
debug: Constructing Uniform initial condition
debug: Read value 0
debug: Constructing UniformDirichletBoundaryCondition from config.
debug: Using value 1
debug: Constructing UniformDirichletBoundaryCondition from config.
debug: Using value -1
debug: Reading processes:

debug: Create GroundwaterFlowProcess.
debug: Associate hydraulic_head with field named 'pressure'.
info: Reading VTU mesh finished.
info: Name: quad_20x10_constMat0.mesh
info: Nr. Nodes: 325
info: Nr. Elements: 288
debug: Reading geometry file '../../quad_20x10_GroundWaterFlow/quad_20x10_left_right.gml'.
debug: Reading process variables:
debug: Constructing process variable pressure
debug: Constructing Uniform initial condition
debug: Read value 0
debug: Constructing UniformDirichletBoundaryCondition from config.
debug: Using value 1
debug: Constructing UniformDirichletBoundaryCondition from config.
debug: Using value -1
debug: Reading processes:

debug: Create GroundwaterFlowProcess.
debug: Associate hydraulic_head with field named 'pressure'.

quad_20x10_GroundWaterFlow.xml

<?xml version="1.0" encoding="ISO-8859-1"?>

<OpenGeoSysProject>
    <mesh>quad_20x10_constMat0.mesh.vtu</mesh>
    <geometry>quad_20x10_left_right.gml</geometry>

    <processes>
        <process>
            <name>GW23</name>
            <type>GROUNDWATER_FLOW</type>
            <process_variable>pressure</process_variable>
            <numerics>LIS</numerics>
        </process>
    </processes>

    <process_variables>
        <process_variable>
            <name>pressure</name>

            <initial_condition>
                <type>Uniform</type>
                <value>0</value>
            </initial_condition>

            <boundary_conditions>
                <boundary_condition>
                    <geometry>quad_20x10_left_right_geometry</geometry>
                    <patch>left</patch>
                    <type>UniformDirichlet</type>
                    <value>1</value>
                </boundary_condition>

                <boundary_condition>
                    <geometry>quad_20x10_left_right_geometry</geometry>
                    <patch>right</patch>
                    <type>UniformDirichlet</type>
                    <value>-1</value>
                </boundary_condition>
            </boundary_conditions>

            <source_terms>
            </source_terms>
        </process_variable>
    </process_variables>

    <output>
        <type>VTK</type>
        <file>/tmp/quad_20x10_result</file>
    </output>

</OpenGeoSysProject>

quad_20x10_left_right.xml

<?xml version="1.0" encoding="ISO-8859-1"?>
<?xml-stylesheet type="text/xsl" href="OpenGeoSysGLI.xsl"?>

<OpenGeoSysGLI xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://www.opengeosys.org/images/xsd/OpenGeoSysGLI.xsd" xmlns:ogs="http://www.opengeosys.org">
    <name>quad_20x10_left_right_geometry</name>
    <points>
        <point id="0" x="0.000000" y="0.000000" z="0.000000"/>
        <point id="1" x="0.000000" y="10.000000" z="0.000000"/>
        <point id="2" x="20.000000" y="0.000000" z="0.000000"/>
        <point id="3" x="20.000000" y="10.000000" z="0.000000"/>
    </points>

    <polylines>
        <polyline id="0" name="left">
            <pnt>0</pnt>
            <pnt>1</pnt>
        </polyline>
        <polyline id="1" name="right">
            <pnt>2</pnt>
            <pnt>3</pnt>
        </polyline>
    </polylines>
</OpenGeoSysGLI>