OGS
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<OpenGeoSysProject>
<meshes>
<mesh>excavation_niches.vtu</mesh>
<mesh>excavation_niches_back.vtu</mesh>
<mesh>excavation_niches_front.vtu</mesh>
<mesh>excavation_niches_left.vtu</mesh>
<mesh>excavation_niches_right.vtu</mesh>
</meshes>
<processes>
<process>
<name>HM</name>
<type>HYDRO_MECHANICS</type>
<dimension>2</dimension>
<integration_order>2</integration_order>
<constitutive_relation>
<type>LinearElasticIsotropic</type>
<youngs_modulus>E</youngs_modulus>
<poissons_ratio>nu</poissons_ratio>
</constitutive_relation>
<specific_body_force>0 0</specific_body_force>
<process_variables>
<displacement>displacement</displacement>
<pressure>pressure</pressure>
</process_variables>
<secondary_variables>
<secondary_variable internal_name="sigma" output_name="sigma" />
<secondary_variable internal_name="epsilon" output_name="epsilon" />
<secondary_variable internal_name="velocity" output_name="velocity" />
</secondary_variables>
</process>
</processes>
<media>
<medium id="0,1,2">
<phases>
<phase>
<type>AqueousLiquid</type>
<properties>
<property>
<name>viscosity</name>
<type>Constant</type>
<value>1.5e-3</value>
</property>
<property>
<name>density</name>
<type>Constant</type>
<value>1200</value>
</property>
</properties>
</phase>
<phase>
<type>Solid</type>
<properties>
<property>
<name>density</name>
<type>Constant</type>
<value>2533</value>
</property>
</properties>
</phase>
</phases>
<properties>
<property>
<name>porosity</name>
<type>Constant</type>
<value>0.1</value>
</property>
<property>
<name>biot_coefficient</name>
<type>Constant</type>
<value>0.6</value>
</property>
<property>
<name>permeability</name>
<type>Constant</type>
<value>1e-19</value>
</property>
<property>
<name>reference_temperature</name>
<type>Constant</type>
<value>295.15</value>
</property>
</properties>
</medium>
</media>
<time_loop>
<processes>
<process ref="HM">
<nonlinear_solver>basic_newton</nonlinear_solver>
<convergence_criterion>
<type>PerComponentDeltaX</type>
<norm_type>NORM2</norm_type>
<abstols>1e-10 1e-10 1e-10</abstols>
<reltols>1e-10 1e-5 1e-5</reltols>
</convergence_criterion>
<time_discretization>
<type>BackwardEuler</type>
</time_discretization>
<time_stepping>
<type>FixedTimeStepping</type>
<t_initial>0</t_initial>
<t_end>11000</t_end>
<timesteps>
<pair>
<repeat>1000</repeat>
<delta_t>1000</delta_t>
</pair>
</timesteps>
</time_stepping>
</process>
</processes>
<output>
<type>VTK</type>
<prefix>excavation_niches</prefix>
<suffix>ts{:timestep}_t_{:time}</suffix>
<timesteps>
<pair>
<repeat>1000</repeat>
<each_steps>1</each_steps>
</pair>
</timesteps>
<variables>
<variable>displacement</variable>
<variable>pressure</variable>
<variable>sigma</variable>
<variable>epsilon</variable>
<variable>velocity</variable>
</variables>
</output>
</time_loop>
<parameters>
<parameter>
<name>E</name>
<type>Constant</type>
<value>4e9</value>
</parameter>
<parameter>
<name>nu</name>
<type>Constant</type>
<value>0.35</value>
</parameter>
<parameter>
<name>displacement0</name>
<type>Constant</type>
<values>0 0</values>
</parameter>
<parameter>
<name>pressure0</name>
<type>Constant</type>
<values>4e6</values>
</parameter>
<parameter>
<name>pressure_tunnel</name>
<type>Constant</type>
<values>1e5</values>
</parameter>
<parameter>
<name>dirichlet0</name>
<type>Constant</type>
<values>0</values>
</parameter>
</parameters>
<curves>
<curve>
<name>excavation_curve_open_niche</name>
<coords>0 10000 11000</coords>
<values>0 11 11</values>
</curve>
<curve>
<name>excavation_curve_closed_niche</name>
<coords>5000 10000 11000</coords>
<values>0 11 11</values>
</curve>
</curves>
<process_variables>
<process_variable>
<name>displacement</name>
<components>2</components>
<order>1</order>
<initial_condition>displacement0</initial_condition>
<boundary_conditions>
<boundary_condition>
<mesh>excavation_niches_left</mesh>
<type>Dirichlet</type>
<component>0</component>
<parameter>dirichlet0</parameter>
</boundary_condition>
<boundary_condition>
<mesh>excavation_niches_back</mesh>
<type>Dirichlet</type>
<component>1</component>
<parameter>dirichlet0</parameter>
</boundary_condition>
<boundary_condition>
<mesh>excavation_niches_right</mesh>
<type>Dirichlet</type>
<component>0</component>
<parameter>dirichlet0</parameter>
</boundary_condition>
<boundary_condition>
<mesh>excavation_niches_front</mesh>
<type>Dirichlet</type>
<component>1</component>
<parameter>dirichlet0</parameter>
</boundary_condition>
</boundary_conditions>
<deactivated_subdomains>
<deactivated_subdomain>
<time_curve>excavation_curve_open_niche</time_curve>
<line_segment>
<start>-5 0 0</start>
<end>-5 11 0</end>
</line_segment>
<material_ids>2</material_ids>
</deactivated_subdomain>
<deactivated_subdomain>
<time_curve>excavation_curve_closed_niche</time_curve>
<line_segment>
<start>5 0 0</start>
<end>5 11 0</end>
</line_segment>
<material_ids>1</material_ids>
</deactivated_subdomain>
</deactivated_subdomains>
</process_variable>
<process_variable>
<name>pressure</name>
<components>1</components>
<order>1</order>
<initial_condition>pressure0</initial_condition>
<boundary_conditions>
<boundary_condition>
<mesh>excavation_niches_back</mesh>
<type>Dirichlet</type>
<parameter>pressure0</parameter>
</boundary_condition>
</boundary_conditions>
<deactivated_subdomains>
<deactivated_subdomain>
<time_curve>excavation_curve_open_niche</time_curve>
<line_segment>
<start>-5 0 0</start>
<end>-5 11 0</end>
</line_segment>
<material_ids>2</material_ids>
<boundary_parameter>pressure_tunnel</boundary_parameter>
</deactivated_subdomain>
<deactivated_subdomain>
<time_curve>excavation_curve_closed_niche</time_curve>
<line_segment>
<start>5 0 0</start>
<end>5 11 0</end>
</line_segment>
<material_ids>1</material_ids>
<boundary_parameter>pressure_tunnel</boundary_parameter>
</deactivated_subdomain>
</deactivated_subdomains>
</process_variable>
</process_variables>
<nonlinear_solvers>
<nonlinear_solver>
<name>basic_newton</name>
<type>Newton</type>
<max_iter>100</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>SparseLU</solver_type>
<scaling>true</scaling>
</eigen>
</linear_solver>
</linear_solvers>
<test_definition>
<vtkdiff>
<regex>excavation_niches_ts_.*.vtu</regex>
<field>displacement</field>
<absolute_tolerance>1e-15</absolute_tolerance>
<relative_tolerance>1e-15</relative_tolerance>
</vtkdiff>
<vtkdiff>
<regex>excavation_niches_ts_.*.vtu</regex>
<field>epsilon</field>
<absolute_tolerance>1e-15</absolute_tolerance>
<relative_tolerance>1e-15</relative_tolerance>
</vtkdiff>
<vtkdiff>
<regex>excavation_niches_ts_.*.vtu</regex>
<field>sigma</field>
<absolute_tolerance>3e-8</absolute_tolerance>
<relative_tolerance>1e-15</relative_tolerance>
</vtkdiff>
<vtkdiff>
<regex>excavation_niches_ts_.*.vtu</regex>
<field>pressure</field>
<absolute_tolerance>6e-8</absolute_tolerance>
<relative_tolerance>1e-15</relative_tolerance>
</vtkdiff>
<vtkdiff>
<regex>excavation_niches_ts_.*.vtu</regex>
<field>velocity</field>
<absolute_tolerance>1e-15</absolute_tolerance>
<relative_tolerance>1e-15</relative_tolerance>
</vtkdiff>
<vtkdiff>
<regex>excavation_niches_ts_.*.vtu</regex>
<field>HydraulicFlow</field>
<absolute_tolerance>3e-15</absolute_tolerance>
<relative_tolerance>1e-15</relative_tolerance>
</vtkdiff>
<vtkdiff>
<regex>excavation_niches_ts_.*.vtu</regex>
<field>NodalForces</field>
<absolute_tolerance>2e-5</absolute_tolerance>
<relative_tolerance>1e-15</relative_tolerance>
</vtkdiff>
</test_definition>
</OpenGeoSysProject>