square_1e0_neumann.prj

<?xml version="1.0" encoding="ISO-8859-1"?>
<OpenGeoSysProject>
    <mesh>square_1x1_quad_1e0.vtu</mesh>
    <geometry>square_1x1.gml</geometry>
    <processes>
        <process>
            <name>GW23</name>
            <type>GROUNDWATER_FLOW</type>
            <integration_order>2</integration_order>
            <hydraulic_conductivity>K</hydraulic_conductivity>
            <process_variables>
                <process_variable>pressure</process_variable>
            </process_variables>
            <secondary_variables>
                <secondary_variable type="static" internal_name="darcy_velocity" output_name="v"/>
            </secondary_variables>
        </process>
    </processes>
    <time_loop>
        <processes>
            <process ref="GW23">
                <nonlinear_solver>basic_picard</nonlinear_solver>
                <convergence_criterion>
                    <type>DeltaX</type>
                    <norm_type>NORM2</norm_type>
                    <abstol>1.e-6</abstol>
                </convergence_criterion>
                <time_discretization>
                    <type>BackwardEuler</type>
                </time_discretization>
                <output>
                    <variables>
                        <variable> pressure </variable>
                        <variable> v      </variable>
                    </variables>
                </output>
                <time_stepping>
                    <type>SingleStep</type>
                </time_stepping>
            </process>
        </processes>
        <output>
            <type>VTK</type>
            <prefix>square_1e0_neumann</prefix>
        </output>
    </time_loop>
    <parameters>
        <parameter>
            <name>K</name>
            <type>Constant</type>
            <value>1</value>
        </parameter>
        <parameter>
            <name>p0</name>
            <type>Constant</type>
            <value>0</value>
        </parameter>
        <parameter>
            <name>p_neumann</name>
            <type>Constant</type>
            <value>1</value>
        </parameter>
        <parameter>
            <name>p_Dirichlet</name>
            <type>Constant</type>
            <value>1</value>
        </parameter>
    </parameters>
    <process_variables>
        <process_variable>
            <name>pressure</name>
            <components>1</components>
            <order>1</order>
            <initial_condition>p0</initial_condition>
            <boundary_conditions>
                <boundary_condition>
                    <geometrical_set>square_1x1_geometry</geometrical_set>
                    <geometry>left</geometry>
                    <type>Dirichlet</type>
                    <parameter>p_Dirichlet</parameter>
                </boundary_condition>
                <boundary_condition>
                    <geometrical_set>square_1x1_geometry</geometrical_set>
                    <geometry>bottom</geometry>
                    <type>Dirichlet</type>
                    <parameter>p_Dirichlet</parameter>
                </boundary_condition>
                <boundary_condition>
                    <geometrical_set>square_1x1_geometry</geometrical_set>
                    <geometry>right</geometry>
                    <type>Neumann</type>
                    <parameter>p_neumann</parameter>
                </boundary_condition>
            </boundary_conditions>
        </process_variable>
    </process_variables>
    <nonlinear_solvers>
        <nonlinear_solver>
            <name>basic_picard</name>
            <type>Picard</type>
            <max_iter>10</max_iter>
            <linear_solver>general_linear_solver</linear_solver>
        </nonlinear_solver>
    </nonlinear_solvers>
    <linear_solvers>
        <linear_solver>
            <name>general_linear_solver</name>
            <lis>-i cg -p jacobi -tol 1e-16 -maxiter 10000</lis>
            <eigen>
                <solver_type>CG</solver_type>
                <precon_type>DIAGONAL</precon_type>
                <max_iteration_step>10000</max_iteration_step>
                <error_tolerance>1e-16</error_tolerance>
            </eigen>
            <petsc>
                <prefix>gw</prefix>
                <parameters>-gw_ksp_type cg -gw_pc_type bjacobi -gw_ksp_rtol 1e-16 -gw_ksp_max_it 10000</parameters>
            </petsc>
        </linear_solver>
    </linear_solvers>
</OpenGeoSysProject>