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cube_1e1_neumann.prj 4.21 KB
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<?xml version="1.0" encoding="ISO-8859-1"?>
<OpenGeoSysProject>
    <mesh>cube_1x1x1_hex_1e1.vtu</mesh>
    <geometry>cube_1x1x1.gml</geometry>
    <processes>
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        <include file="SteadyStateDiffusion.xml"/>
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    </processes>
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    <media>
        <medium id="0">
            <phases/>
            <properties>
                <property>
                    <name>diffusion</name>
                    <type>Constant</type>
                    <value>1</value>
                </property>
                <property>
                    <name>reference_temperature</name>
                    <type>Constant</type>
                    <value>293.15</value>
                </property>
            </properties>
        </medium>
    </media>
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    <time_loop>
        <processes>
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            <process ref="SteadyStateDiffusion">
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                <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>
                <time_stepping>
                    <type>SingleStep</type>
                </time_stepping>
            </process>
        </processes>
        <output>
            <type>VTK</type>
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            <prefix>cube_1e1_neumann</prefix>
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            <variables>
                <variable> pressure </variable>
                <variable> v      </variable>
            </variables>
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            <suffix>_ts_{:timestep}_t_{:time}</suffix>
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        </output>
    </time_loop>
    <parameters>
        <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>cube_1x1x1_geometry</geometrical_set>
                    <geometry>left</geometry>
                    <type>Dirichlet</type>
                    <parameter>p_Dirichlet</parameter>
                </boundary_condition>
                <boundary_condition>
                    <geometrical_set>cube_1x1x1_geometry</geometrical_set>
                    <geometry>front</geometry>
                    <type>Dirichlet</type>
                    <parameter>p_Dirichlet</parameter>
                </boundary_condition>
                <boundary_condition>
                    <geometrical_set>cube_1x1x1_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>