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OGS
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OGS
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<OpenGeoSysProject>
<meshes>
<mesh>square_200x100_domain.vtu</mesh>
<mesh>square_200x100_physical_group_Left.vtu</mesh>
<mesh>square_200x100_physical_group_Right.vtu</mesh>
<mesh>square_200x100_physical_group_Top.vtu</mesh>
<mesh>square_200x100_physical_group_Bottom.vtu</mesh>
</meshes>
<processes>
<process>
<name>HM</name>
<type>HYDRO_MECHANICS</type>
<integration_order>3</integration_order>
<constitutive_relation>
<type>LinearElasticIsotropic</type>
<youngs_modulus>E</youngs_modulus>
<poissons_ratio>nu</poissons_ratio>
</constitutive_relation>
<process_variables>
<displacement>displacement</displacement>
<pressure>pressure</pressure>
</process_variables>
<secondary_variables>
<secondary_variable internal_name="sigma" output_name="sigma" />
</secondary_variables>
<specific_body_force>0 0</specific_body_force>
</process>
</processes>
<media>
<medium>
<phases>
<phase>
<type>Gas</type>
<properties>
<property>
<name>viscosity</name>
<type>Constant</type>
<value>1.3e-3</value>
</property>
<property>
<name>density</name>
<type>Constant</type>
<value>1000</value>
</property>
</properties>
</phase>
<phase>
<type>Solid</type>
<properties>
<property>
<name>density</name>
<type>Constant</type>
<value>2650</value>
</property>
</properties>
</phase>
</phases>
<properties>
<property>
<name>porosity</name>
<type>Constant</type>
<value>0.4</value>
</property>
<property>
<name>biot_coefficient</name>
<type>Constant</type>
<value>1</value>
</property>
<property>
<name>reference_temperature</name>
<type>Constant</type>
<value>283.15</value>
</property>
<property>
<name>permeability</name>
<type>Constant</type>
<value>1e-11</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-1 1e-8 1e-8</abstols>
</convergence_criterion>
<time_discretization>
<type>BackwardEuler</type>
</time_discretization>
<time_stepping>
<type>FixedTimeStepping</type>
<t_initial>0</t_initial>
<t_end>20</t_end>
<timesteps>
<pair>
<repeat>80</repeat>
<delta_t>0.25</delta_t>
</pair>
</timesteps>
</time_stepping>
</process>
</processes>
<output>
<type>VTK</type>
<prefix>square_200x100</prefix>
<timesteps>
<pair>
<repeat>1</repeat>
<each_steps>1</each_steps>
</pair>
</timesteps>
<variables>
<variable>displacement</variable>
<variable>pressure</variable>
<variable>pressure_interpolated</variable>
<variable>sigma</variable>
</variables>
<suffix>ts{:timestep}_t_{:time}</suffix>
</output>
</time_loop>
<parameters>
<parameter>
<name>E</name>
<type>Constant</type>
<value>200e3</value>
</parameter>
<parameter>
<name>nu</name>
<type>Constant</type>
<value>0</value>
</parameter>
<parameter>
<name>displacement0</name>
<type>Constant</type>
<values>0 0</values>
</parameter>
<parameter>
<name>pressure_ic</name>
<type>Constant</type>
<values>0</values>
</parameter>
<parameter>
<name>p_neumann</name>
<type>Constant</type>
<values>1</values>
</parameter>
<parameter>
<name>dirichlet0</name>
<type>Constant</type>
<value>0</value>
</parameter>
<parameter>
<name>harmonic_1</name>
<type>Function</type>
<expression>0.1*1e5*sin(2*3.141592653589793*0.1*t)*cos(2*3.141592653589793*x/100)</expression>
</parameter>
<parameter>
<name>harmonic_2</name>
<type>Function</type>
<expression>-0.1*1e5*sin(2*3.141592653589793*0.1*t)*cos(2*3.141592653589793*x/100)</expression>
</parameter>
<parameter>
<name>dirichlet1</name>
<type>Constant</type>
<value>1</value>
</parameter>
</parameters>
<process_variables>
<process_variable>
<name>displacement</name>
<components>2</components>
<order>2</order>
<initial_condition>displacement0</initial_condition>
<boundary_conditions>
<boundary_condition>
<mesh>square_200x100_physical_group_Right</mesh>
<type>Dirichlet</type>
<component>0</component>
<parameter>dirichlet0</parameter>
</boundary_condition>
<boundary_condition>
<mesh>square_200x100_physical_group_Left</mesh>
<type>Dirichlet</type>
<component>0</component>
<parameter>dirichlet0</parameter>
</boundary_condition>
<boundary_condition>
<mesh>square_200x100_physical_group_Bottom</mesh>
<type>Dirichlet</type>
<component>1</component>
<parameter>dirichlet0</parameter>
</boundary_condition>
<boundary_condition>
<mesh>square_200x100_physical_group_Top</mesh>
<type>Neumann</type>
<component>1</component>
<parameter>harmonic_2</parameter>
</boundary_condition>
</boundary_conditions>
</process_variable>
<process_variable>
<name>pressure</name>
<components>1</components>
<order>1</order>
<initial_condition>pressure_ic</initial_condition>
<boundary_conditions>
<boundary_condition>
<mesh>square_200x100_physical_group_Top</mesh>
<type>Dirichlet</type>
<component>0</component>
<parameter>harmonic_1</parameter>
</boundary_condition>
</boundary_conditions>
</process_variable>
</process_variables>
<nonlinear_solvers>
<nonlinear_solver>
<name>basic_newton</name>
<type>Newton</type>
<max_iter>50</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>
</OpenGeoSysProject>
1.12.0