OGS  master
ParallelPlateWithBodyForce.prj
<OpenGeoSysProject>
  <meshes>
    <mesh>ParallelPlate.vtu</mesh>
    <mesh>ParallelPlate_top.vtu</mesh>
    <mesh>ParallelPlate_bottom.vtu</mesh>
    <mesh>ParallelPlate_left.vtu</mesh>
    <mesh>ParallelPlate_right.vtu</mesh>
  </meshes>
  <processes>
    <process>
      <name>ff</name>
      <type>StokesFlow</type>
      <integration_order>3</integration_order>
      <process_variables>
        <liquid_velocity>liquid_velocity</liquid_velocity>
        <pressure>pressure</pressure>
      </process_variables>
      <specific_body_force>2 0</specific_body_force>
    </process>
  </processes>
  <media>
    <medium id="0">
      <phases>
        <phase>
          <type>AqueousLiquid</type>
          <properties>
            <property>
              <name>viscosity</name>
              <type>Constant</type>
              <value>5e-3</value>
            </property>
          </properties>
        </phase>
      </phases>
    </medium>
  </media>
  <time_loop>
    <processes>
      <process ref="ff">
        <nonlinear_solver>basic_picard</nonlinear_solver>
        <convergence_criterion>
          <type>PerComponentDeltaX</type>
          <norm_type>NORM2</norm_type>
          <abstols>1.e-6 1.e-6 1.e-6</abstols>
        </convergence_criterion>
        <time_discretization>
          <type>BackwardEuler</type>
        </time_discretization>
        <time_stepping>
          <type>FixedTimeStepping</type>
          <t_initial>0</t_initial>
          <t_end>2</t_end>
          <timesteps>
            <pair>
              <repeat>2</repeat>
              <delta_t>1</delta_t>
            </pair>
          </timesteps>
        </time_stepping>
      </process>
    </processes>
    <output>
      <type>VTK</type>
      <prefix>ParallelPlateWithBodyForce</prefix>
      <suffix>ts{:timestep}_t_{:time}</suffix>
      <timesteps>
        <pair>
          <repeat>2</repeat>
          <each_steps>1</each_steps>
        </pair>
      </timesteps>
      <variables>
        <variable>liquid_velocity</variable>
        <variable>pressure</variable>
      </variables>
    </output>
  </time_loop>
  <parameters>
    <parameter>
      <name>kappa</name>
      <type>Constant</type>
      <values>1.157e-12</values>
    </parameter>
    <parameter>
      <name>porosity</name>
      <type>Constant</type>
      <value>1</value>
    </parameter>
    <parameter>
      <name>decay</name>
      <type>Constant</type>
      <value>0</value>
    </parameter>
    <parameter>
      <name>Dirichlet0</name>
      <type>Constant</type>
      <value>0</value>
    </parameter>
    <parameter>
      <name>v0</name>
      <type>Constant</type>
      <values>0 0</values>
    </parameter>
    <parameter>
      <name>p0</name>
      <type>Constant</type>
      <value>200000</value>
    </parameter>
    <parameter>
      <name>p_in</name>
      <type>Constant</type>
      <value>200039.8</value>
    </parameter>
    <parameter>
      <name>p_out</name>
      <type>Constant</type>
      <value>200000</value>
    </parameter>
  </parameters>
  <process_variables>
    <process_variable>
      <name>liquid_velocity</name>
      <components>2</components>
      <order>2</order>
      <initial_condition>v0</initial_condition>
      <boundary_conditions>
        <boundary_condition>
          <mesh>ParallelPlate_top</mesh>
          <type>Dirichlet</type>
          <component>0</component>
          <parameter>Dirichlet0</parameter>
        </boundary_condition>
        <boundary_condition>
          <mesh>ParallelPlate_bottom</mesh>
          <type>Dirichlet</type>
          <component>0</component>
          <parameter>Dirichlet0</parameter>
        </boundary_condition>
        <boundary_condition>
          <mesh>ParallelPlate_top</mesh>
          <type>Dirichlet</type>
          <component>1</component>
          <parameter>Dirichlet0</parameter>
        </boundary_condition>
        <boundary_condition>
          <mesh>ParallelPlate_bottom</mesh>
          <type>Dirichlet</type>
          <component>1</component>
          <parameter>Dirichlet0</parameter>
        </boundary_condition>
      </boundary_conditions>
    </process_variable>
    <process_variable>
      <name>pressure</name>
      <components>1</components>
      <order>1</order>
      <initial_condition>p0</initial_condition>
      <boundary_conditions>
        <boundary_condition>
          <mesh>ParallelPlate_left</mesh>
          <type>Dirichlet</type>
          <parameter>p_in</parameter>
        </boundary_condition>
        <boundary_condition>
          <mesh>ParallelPlate_right</mesh>
          <type>Dirichlet</type>
          <parameter>p_out</parameter>
        </boundary_condition>
      </boundary_conditions>
    </process_variable>
  </process_variables>
  <nonlinear_solvers>
    <nonlinear_solver>
      <name>basic_picard</name>
      <type>Picard</type>
      <max_iter>300</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 20000</lis>
      <eigen>
        <solver_type>BiCGSTAB</solver_type>
        <precon_type>ILUT</precon_type>
        <max_iteration_step>10000</max_iteration_step>
        <error_tolerance>1e-14</error_tolerance>
      </eigen>
      <petsc>
        <parameters>-ksp_type cg -pc_type bjacobi -ksp_atol 1e-10 -ksp_rtol 1e-8 -snes_type vinewtonssls -snes_linesearch_type l2 -snes_atol 1.e-8 -snes_rtol 1.e-8 -snes_max_it 1000 -snes_monitor</parameters>
      </petsc>
    </linear_solver>
  </linear_solvers>
  <test_definition>
    <vtkdiff>
      <regex>ParallelPlateWithBodyForce_ts_[0-9]*_t_[0-9]*.000000.vtu</regex>
      <field>pressure_interpolated</field>
      <absolute_tolerance>1e-6</absolute_tolerance>
      <relative_tolerance>1e-10</relative_tolerance>
    </vtkdiff>
    <vtkdiff>
      <regex>ParallelPlateWithBodyForce_ts_[0-9]*_t_[0-9]*.000000.vtu</regex>
      <field>liquid_velocity</field>
      <absolute_tolerance>1e-10</absolute_tolerance>
      <relative_tolerance>1e-16</relative_tolerance>
    </vtkdiff>
  </test_definition>
</OpenGeoSysProject>