Hi I am unable to do my liquid flow simualtion, I have 9 media and
I have a salt material in the center which is impermeable.
I have assigned BC to left boundary which is a flux_in value as Neumann
Initial conditions are assigned to my mesh with atmospheric pressure gradient till my bottom depth using mesh nodes as p_init values
the solver has no error while solving but my each vtus just get stuck and the bottom left.
Would would be the problem?
<!-- Meshes -->
<meshes>
<mesh>mesh_initialpressure.vtu</mesh>
<mesh>left_pressure.vtu</mesh>
</meshes>
<!-- Processes -->
<processes>
<process>
<name>LiquidFlow</name>
<type>LIQUID_FLOW</type>
<integration_order>2</integration_order>
<process_variables>
<process_variable>pressure</process_variable>
</process_variables>
<secondary_variables>
<secondary_variable internal_name="darcy_velocity" output_name="v"/>
</secondary_variables>
<specific_body_force>0.0 0.0 -9.8</specific_body_force>
<linear>true</linear>
</process>
</processes>
<!-- Time Loop -->
<time_loop>
<processes>
<process ref="LiquidFlow">
<nonlinear_solver>basic_picard</nonlinear_solver>
<convergence_criterion>
<type>DeltaX</type>
<norm_type>NORM2</norm_type>
<abstol>1.e-6</abstol>
</convergence_criterion>
<time_discretization>
<type>BackwardEuler</type>
</time_discretization>
<time_stepping>
<type>FixedTimeStepping</type>
<t_initial>0.0</t_initial>
<t_end>3500000</t_end>
<timesteps>
<pair>
<repeat>1</repeat>
<delta_t>7000</delta_t>
</pair>
</timesteps>
</time_stepping>
</process>
</processes>
<output>
<type>VTK</type>
<prefix>2Dliquidflow2</prefix>
<timesteps>
<pair>
<repeat>100</repeat>
<each_steps>1</each_steps>
</pair>
</timesteps>
<variables>
<variable>pressure</variable>
<variable>v</variable>
</variables>
<suffix>_ts_{:timestep}_t_{:time}</suffix>
</output>
</time_loop>
<!-- Media / Material properties -->
<media>
<!-- 0 – Quaternary -->
<medium id="9">
<phases>
<phase>
<type>AqueousLiquid</type>
<properties>
<property><name>viscosity</name><type>Constant</type><value>1.00e-3</value></property>
<property><name>density</name><type>Constant</type><value>1000</value></property>
</properties>
</phase>
</phases>
<properties>
<property><name>porosity</name><type>Constant</type><value>0.35</value></property>
<property><name>permeability</name><type>Constant</type><value>1e-12 0 0 0 1e-12 0 0 0 1e-12</value></property>
<property><name>reference_temperature</name><type>Constant</type><value>288.15</value></property>
<property><name>storage</name><type>Constant</type><value>1e-9</value></property>
</properties>
</medium>
<!-- 1 – Tertiary -->
<medium id="8">
<phases>
<phase>
<type>AqueousLiquid</type>
<properties>
<property><name>viscosity</name><type>Constant</type><value>1.00e-3</value></property>
<property><name>density</name><type>Constant</type><value>1000</value></property>
</properties>
</phase>
</phases>
<properties>
<property><name>porosity</name><type>Constant</type><value>0.25</value></property>
<property><name>permeability</name><type>Constant</type><value>1e-13 0 0 0 1e-13 0 0 0 1e-13</value></property>
<property><name>reference_temperature</name><type>Constant</type><value>290.15</value></property>
<property><name>storage</name><type>Constant</type><value>5e-10</value></property>
</properties>
</medium>
<!-- 2 – Upper Cretaceous -->
<medium id="7">
<phases>
<phase>
<type>AqueousLiquid</type>
<properties>
<property><name>viscosity</name><type>Constant</type><value>1.00e-3</value></property>
<property><name>density</name><type>Constant</type><value>1000</value></property>
</properties>
</phase>
</phases>
<properties>
<property><name>porosity</name><type>Constant</type><value>0.30</value></property>
<property><name>permeability</name><type>Constant</type><value>1e-12 0 0 0 1e-12 0 0 0 1e-12</value></property>
<property><name>reference_temperature</name><type>Constant</type><value>292.15</value></property>
<property><name>storage</name><type>Constant</type><value>1e-10</value></property>
</properties>
</medium>
<!-- 3 – Lower Cretaceous -->
<medium id="6">
<phases>
<phase>
<type>AqueousLiquid</type>
<properties>
<property><name>viscosity</name><type>Constant</type><value>1.00e-3</value></property>
<property><name>density</name><type>Constant</type><value>1000</value></property>
</properties>
</phase>
</phases>
<properties>
<property><name>porosity</name><type>Constant</type><value>0.30</value></property>
<property><name>permeability</name><type>Constant</type><value>1e-12 0 0 0 1e-12 0 0 0 1e-12</value></property>
<property><name>reference_temperature</name><type>Constant</type><value>294.15</value></property>
<property><name>storage</name><type>Constant</type><value>5e-11</value></property>
</properties>
</medium>
<!-- 4 – L_Bunter -->
<medium id="5">
<phases>
<phase>
<type>AqueousLiquid</type>
<properties>
<property><name>viscosity</name><type>Constant</type><value>1.00e-3</value></property>
<property><name>density</name><type>Constant</type><value>1000</value></property>
</properties>
</phase>
</phases>
<properties>
<property><name>porosity</name><type>Constant</type><value>0.30</value></property>
<property><name>permeability</name><type>Constant</type><value>1e-12 0 0 0 1e-12 0 0 0 1e-12</value></property>
<property><name>reference_temperature</name><type>Constant</type><value>295.15</value></property>
<property><name>storage</name><type>Constant</type><value>1e-11</value></property>
</properties>
</medium>
<!-- 5 – Z3 (salt) -->
<!-- 5 – Z3 (salt, plume) -->
<medium id="4">
<phases>
<phase>
<type>AqueousLiquid</type>
<properties>
<property><name>viscosity</name><type>Constant</type><value>1.0e-3</value></property>
<property><name>density</name><type>Constant</type><value>1000</value></property>
</properties>
</phase>
</phases>
<properties>
<property><name>porosity</name><type>Constant</type><value>0.01</value></property>
<property><name>permeability</name><type>Constant</type><value>1e-22 0 0 0 1e-22 0 0 0 1e-22</value></property>
<property><name>reference_temperature</name><type>Constant</type><value>296.15</value></property>
<property><name>storage</name><type>Constant</type><value>1e-12</value></property>
</properties>
</medium>
<!-- 6 – Z4 (salt, plume) -->
<medium id="3">
<phases>
<phase>
<type>AqueousLiquid</type>
<properties>
<property><name>viscosity</name><type>Constant</type><value>1.0e-3</value></property>
<property><name>density</name><type>Constant</type><value>1000</value></property>
</properties>
</phase>
</phases>
<properties>
<property><name>porosity</name><type>Constant</type><value>0.005</value></property>
<property><name>permeability</name><type>Constant</type><value>1e-22 0 0 0 1e-22 0 0 0 1e-22</value></property>
<property><name>reference_temperature</name><type>Constant</type><value>296.5</value></property>
<property><name>storage</name><type>Constant</type><value>1e-12</value></property>
</properties>
</medium>
<!-- 7 – Z2HS (vein-bearing, plume) -->
<medium id="2">
<phases>
<phase>
<type>AqueousLiquid</type>
<properties>
<property><name>viscosity</name><type>Constant</type><value>1.0e-3</value></property>
<property><name>density</name><type>Constant</type><value>1000</value></property>
</properties>
</phase>
</phases>
<properties>
<property><name>porosity</name><type>Constant</type><value>0.01</value></property>
<property><name>permeability</name><type>Constant</type><value>1e-22 0 0 0 1e-22 0 0 0 1e-22</value></property>
<property><name>reference_temperature</name><type>Constant</type><value>297.0</value></property>
<property><name>storage</name><type>Constant</type><value>1e-12</value></property>
</properties>
</medium>
<!-- 8 – Z1 (plume) -->
<medium id="1">
<phases>
<phase>
<type>AqueousLiquid</type>
<properties>
<property><name>viscosity</name><type>Constant</type><value>1.0e-3</value></property>
<property><name>density</name><type>Constant</type><value>1000</value></property>
</properties>
</phase>
</phases>
<properties>
<property><name>porosity</name><type>Constant</type><value>0.01</value></property>
<property><name>permeability</name><type>Constant</type><value>1e-22 0 0 0 1e-22 0 0 0 1e-22</value></property>
<property><name>reference_temperature</name><type>Constant</type><value>297.5</value></property>
<property><name>storage</name><type>Constant</type><value>1e-12</value></property>
</properties>
</medium>
<!-- 9 – Rotliegend / Basement -->
<medium id="0">
<phases>
<phase>
<type>AqueousLiquid</type>
<properties>
<property><name>viscosity</name><type>Constant</type><value>1.00e-3</value></property>
<property><name>density</name><type>Constant</type><value>1000</value></property>
</properties>
</phase>
</phases>
<properties>
<property><name>porosity</name><type>Constant</type><value>0.1</value></property>
<property><name>permeability</name><type>Constant</type><value>1e-18 0 0 0 1e-18 0 0 0 1e-18</value></property>
<property><name>reference_temperature</name><type>Constant</type><value>300.0</value></property>
<property><name>storage</name><type>Constant</type><value>1e-13</value></property>
</properties>
</medium>
</media>
<parameters>
<parameter>
<name>flux_in</name>
<type>Constant</type>
<value>1e-8</value>
</parameter>
<parameter>
<name>ic</name>
<type>MeshNode</type>
<field_name>p_init</field_name>
</parameter>
</parameters>
<!-- Process Variables -->
<process_variables>
<process_variable>
<name>pressure</name>
<components>1</components>
<order>1</order>
<initial_condition>ic</initial_condition>
<boundary_conditions>
<boundary_condition>
<mesh>left_pressure</mesh>
<type>Neumann</type>
<parameter>flux_in</parameter>
</boundary_condition>
</boundary_conditions>
</process_variable>
</process_variables>
<!-- Nonlinear Solvers -->
<nonlinear_solvers>
<nonlinear_solver>
<name>basic_picard</name>
<type>Picard</type>
<max_iter>10</max_iter>
<linear_solver>general_linear_solver</linear_solver>
</nonlinear_solver>
</nonlinear_solvers>
<!-- Linear Solvers -->
<linear_solvers>
<linear_solver>
<name>general_linear_solver</name>
<lis>-i cg -p jacobi -tol 1e-16 -maxiter 10000</lis>
<eigen>
<solver_type>CG</solver_type>
<precon_type>DIAGONAL</precon_type>
<max_iteration_step>10000</max_iteration_step>
<error_tolerance>1e-20</error_tolerance>
</eigen>
<petsc>
<prefix>lf</prefix>
<parameters>-lf_ksp_type cg -lf_pc_type bjacobi -lf_ksp_rtol 1e-16 -lf_ksp_max_it 10000</parameters>
</petsc>
</linear_solver>
</linear_solvers>
I have also tried the same thing on 2 media and it works with Neumann.