<OpenGeoSysProject>
  <mesh>square_1x1_quad_1e3.vtu</mesh>
  <geometry>square_1x1.gml</geometry>
  <python_script>python_bc.py</python_script>
  <processes>
    <process>
      <name>HT</name>
      <type>HT</type>
      <integration_order>2</integration_order>
      <process_variables>
        <temperature>T</temperature>
        <pressure>p</pressure>
      </process_variables>
      <specific_body_force>0 0</specific_body_force>
    </process>
  </processes>
  <media>
    <medium id="0">
      <phases>
        <phase>
          <type>AqueousLiquid</type>
          <properties>
            <property>
              <name>density</name>
              <type>Constant</type>
              <value>1000</value>
            </property>
            <property>
              <name>viscosity</name>
              <type>Constant</type>
              <value>1e-3</value>
            </property>
            <property>
              <name>specific_heat_capacity</name>
              <type>Constant</type>
              <value>4200</value>
            </property>
            <property>
              <name>thermal_conductivity</name>
              <type>Constant</type>
              <value>0.6</value>
            </property>
          </properties>
        </phase>
        <phase>
          <type>Solid</type>
          <properties>
            <property>
              <name>storage</name>
              <type>Constant</type>
              <value>1e-10</value>
            </property>
            <property>
              <name>density</name>
              <type>Constant</type>
              <value>2000</value>
            </property>
            <property>
              <name>thermal_conductivity</name>
              <type>Constant</type>
              <value>2</value>
            </property>
            <property>
              <name>specific_heat_capacity</name>
              <type>Constant</type>
              <value>800</value>
            </property>
          </properties>
        </phase>
      </phases>
      <properties>
        <property>
          <name>thermal_longitudinal_dispersivity</name>
          <type>Constant</type>
          <value>0</value>
        </property>
        <property>
          <name>thermal_transversal_dispersivity</name>
          <type>Constant</type>
          <value>0</value>
        </property>
        <property>
          <name>permeability</name>
          <type>Constant</type>
          <value>1.e-10 0 0 1.e-10</value>
        </property>
        <property>
          <name>porosity</name>
          <type>Constant</type>
          <value>0.2</value>
        </property>
        <property>
          <name>thermal_conductivity</name>
          <type>EffectiveThermalConductivityPorosityMixing</type>
        </property>
      </properties>
    </medium>
  </media>
  <time_loop>
    <processes>
      <process ref="HT">
        <nonlinear_solver>picard</nonlinear_solver>
        <convergence_criterion>
          <type>DeltaX</type>
          <norm_type>NORM2</norm_type>
          <reltol>1e-8</reltol>
        </convergence_criterion>
        <time_discretization>
          <type>BackwardEuler</type>
        </time_discretization>
        <time_stepping>
          <type>FixedTimeStepping</type>
          <t_initial>0</t_initial>
          <t_end>1000000</t_end>
          <timesteps>
            <pair>
              <repeat>1</repeat>
              <delta_t>1000000</delta_t>
            </pair>
          </timesteps>
        </time_stepping>
      </process>
    </processes>
    <output>
      <type>VTK</type>
      <prefix>out</prefix>
      <variables>
        <variable>T</variable>
        <variable>p</variable>
      </variables>
    </output>
  </time_loop>
  <parameters>
    <parameter>
      <name>T_initial</name>
      <type>Constant</type>
      <value>273</value>
    </parameter>
    <parameter>
      <name>T_left</name>
      <type>Constant</type>
      <value>273</value>
    </parameter>
    <parameter>
      <name>p_initial</name>
      <type>Constant</type>
      <value>0</value>
    </parameter>
    <parameter>
      <name>p_left</name>
      <type>Constant</type>
      <value>80</value>
    </parameter>
    <parameter>
      <name>p_right</name>
      <type>Constant</type>
      <value>0</value>
    </parameter>
  </parameters>
  <process_variables>
    <process_variable>
      <name>T</name>
      <components>1</components>
      <order>1</order>
      <initial_condition>T_initial</initial_condition>
      <boundary_conditions>
        <boundary_condition>
          <geometrical_set>geometry</geometrical_set>
          <geometry>left</geometry>
          <type>Dirichlet</type>
          <parameter>T_left</parameter>
        </boundary_condition>
        <boundary_condition>
          <geometrical_set>geometry</geometrical_set>
          <geometry>right</geometry>
          <type>Python</type>
          <bc_object>nonlinear_robin_bc</bc_object>
        </boundary_condition>
      </boundary_conditions>
    </process_variable>
    <process_variable>
      <name>p</name>
      <components>1</components>
      <order>1</order>
      <initial_condition>p_initial</initial_condition>
      <boundary_conditions>
        <boundary_condition>
          <geometrical_set>geometry</geometrical_set>
          <geometry>left</geometry>
          <type>Dirichlet</type>
          <parameter>p_left</parameter>
        </boundary_condition>
        <boundary_condition>
          <geometrical_set>geometry</geometrical_set>
          <geometry>right</geometry>
          <type>Dirichlet</type>
          <parameter>p_right</parameter>
        </boundary_condition>
      </boundary_conditions>
    </process_variable>
  </process_variables>
  <nonlinear_solvers>
    <nonlinear_solver>
      <name>picard</name>
      <type>Picard</type>
      <max_iter>200</max_iter>
      <linear_solver>general_linear_solver</linear_solver>
    </nonlinear_solver>
  </nonlinear_solvers>
  <linear_solvers>
    <linear_solver>
      <name>general_linear_solver</name>
      <eigen>
        <solver_type>BiCGSTAB</solver_type>
        <precon_type>ILUT</precon_type>
        <max_iteration_step>10000</max_iteration_step>
        <error_tolerance>1e-16</error_tolerance>
      </eigen>
    </linear_solver>
  </linear_solvers>
  <test_definition>
    <vtkdiff>
      <file>out_ts_1_t_1000000.000000.vtu</file>
      <field>T</field>
      <absolute_tolerance>1e-4</absolute_tolerance>
      <relative_tolerance>1e-6</relative_tolerance>
    </vtkdiff>
    <vtkdiff>
      <file>out_ts_1_t_1000000.000000.vtu</file>
      <field>p</field>
      <absolute_tolerance>1e-4</absolute_tolerance>
      <relative_tolerance>1e-6</relative_tolerance>
    </vtkdiff>
  </test_definition>
</OpenGeoSysProject>