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OGS
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OGS
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<OpenGeoSysProject>
<mesh>square_1x1_quad_1e3.vtu</mesh>
<geometry>square_1x1.gml</geometry>
<processes>
<process>
<name>IsothermalFluidFlowWithGravity</name>
<type>HT</type>
<integration_order>2</integration_order>
<process_variables>
<temperature>T</temperature>
<pressure>p</pressure>
</process_variables>
<specific_body_force>0 -9.81</specific_body_force>
<secondary_variables>
<secondary_variable internal_name="darcy_velocity" output_name="darcy_velocity" />
</secondary_variables>
</process>
</processes>
<media>
<medium id="0">
<phases>
<phase>
<type>AqueousLiquid</type>
<properties>
<property>
<name>density</name>
<type>Constant</type>
<value>1e-3</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>0.65</value>
</property>
</properties>
</phase>
<phase>
<type>Solid</type>
<properties>
<property>
<name>storage</name>
<type>Constant</type>
<value>0.0</value>
</property>
<property>
<name>density</name>
<type>Constant</type>
<value>0.0</value>
</property>
<property>
<name>thermal_conductivity</name>
<type>Constant</type>
<value>3.0</value>
</property>
<property>
<name>specific_heat_capacity</name>
<type>Constant</type>
<value>0</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-14 0 0 1.e-14</value>
</property>
<property>
<name>porosity</name>
<type>Constant</type>
<value>0.001</value>
</property>
<property>
<name>thermal_conductivity</name>
<type>EffectiveThermalConductivityPorosityMixing</type>
</property>
</properties>
</medium>
</media>
<time_loop>
<processes>
<process ref="IsothermalFluidFlowWithGravity">
<nonlinear_solver>basic_picard</nonlinear_solver>
<convergence_criterion>
<type>DeltaX</type>
<norm_type>NORM2</norm_type>
<abstol>1.e-3</abstol>
</convergence_criterion>
<time_discretization>
<type>BackwardEuler</type>
</time_discretization>
<time_stepping>
<type>FixedTimeStepping</type>
<t_initial>0.0</t_initial>
<t_end>1</t_end>
<timesteps>
<pair>
<repeat>1</repeat>
<delta_t>1</delta_t>
</pair>
</timesteps>
</time_stepping>
</process>
</processes>
<output>
<type>VTK</type>
<prefix>IsothermalFluidFlowWithGravity</prefix>
<timesteps>
<pair>
<repeat>1</repeat>
<each_steps>1</each_steps>
</pair>
</timesteps>
<variables>
<variable>T</variable>
<variable>p</variable>
<variable>darcy_velocity</variable>
</variables>
<suffix>ts{:timestep}_t_{:time}</suffix>
</output>
</time_loop>
<parameters>
<parameter>
<name>lambda_fluid</name>
<type>Constant</type>
<value>0.65</value>
</parameter>
<parameter>
<name>alpha_l</name>
<type>Constant</type>
<value>0.0</value>
</parameter>
<parameter>
<name>alpha_t</name>
<type>Constant</type>
<value>0.0</value>
</parameter>
<parameter>
<name>T0</name>
<type>Constant</type>
<value>0</value>
</parameter>
<parameter>
<name>P0</name>
<type>Constant</type>
<value>0</value>
</parameter>
<parameter>
<name>p_Dirichlet_left</name>
<type>Constant</type>
<value>1</value>
</parameter>
<parameter>
<name>p_Dirichlet_right</name>
<type>Constant</type>
<value>-1</value>
</parameter>
<parameter>
<name>t_Dirichlet_bottom</name>
<type>Constant</type>
<value>0</value>
</parameter>
<parameter>
<name>t_Dirichlet_top</name>
<type>Constant</type>
<value>0</value>
</parameter>
</parameters>
<process_variables>
<process_variable>
<name>T</name>
<components>1</components>
<order>1</order>
<initial_condition>T0</initial_condition>
<boundary_conditions>
<boundary_condition>
<geometrical_set>geometry</geometrical_set>
<geometry>bottom</geometry>
<type>Dirichlet</type>
<parameter>t_Dirichlet_bottom</parameter>
</boundary_condition>
<boundary_condition>
<geometrical_set>geometry</geometrical_set>
<geometry>top</geometry>
<type>Dirichlet</type>
<parameter>t_Dirichlet_top</parameter>
</boundary_condition>
</boundary_conditions>
</process_variable>
<process_variable>
<name>p</name>
<components>1</components>
<order>1</order>
<initial_condition>P0</initial_condition>
<boundary_conditions>
<boundary_condition>
<geometrical_set>geometry</geometrical_set>
<geometry>left</geometry>
<type>Dirichlet</type>
<parameter>p_Dirichlet_left</parameter>
</boundary_condition>
<boundary_condition>
<geometrical_set>geometry</geometrical_set>
<geometry>right</geometry>
<type>Dirichlet</type>
<parameter>p_Dirichlet_right</parameter>
</boundary_condition>
</boundary_conditions>
</process_variable>
</process_variables>
<nonlinear_solvers>
<nonlinear_solver>
<name>basic_picard</name>
<type>Picard</type>
<max_iter>1000</max_iter>
<linear_solver>general_linear_solver</linear_solver>
</nonlinear_solver>
</nonlinear_solvers>
<linear_solvers>
<linear_solver>
<name>general_linear_solver</name>
<lis>-i bicgstab -p jacobi -tol 1e-16 -maxiter 10000</lis>
<petsc>
<prefix>HT</prefix>
<parameters>-HT_ksp_type bcgs -HT_pc_type bjacobi -HT_ksp_rtol 1e-16 -HT_ksp_max_it 4000</parameters>
</petsc>
<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>
</OpenGeoSysProject>
1.12.0