Case 7 Usage of geostatic.set settings file

 

The conditions for the present case are identical to Case04, with the simulation encompassing the five stages of model initialisation, i.e.:

 

1.Gravity initialisation

2.Tectonic load

3.Contact release

4.Constitutive model release

5.Displacement reinitialisation

 

At every geostatic stage Geostatic_control_data must be defined with the appropriate options. Generally each geostatic stage will require the same type of Geostatic_control_data settings for every different model (e.g. geostatic options for the contact release stage will generally be the same independently of the case analysed). Thus in order to simplify data definition the file "geostatic.set" contains default geostatic settings for every different stage that can be assigned in every model by specifying the corresponding geostatic set name. That file may be either stored at PARAGEOHOME directory so that the same file may be accessed for all the models we run or may be stored at the same directory than the model data file we are running. Below it is shown the content of the geostatic.set file and how to assign the different geostatic sets within the main simulation data file.

 

 

geostatic.set file

 

Below it is shown the data defined in the geostatic.set file.

 

Data File

 

 

* Geostatic_control_data      

! ---------------------------------

 Set_name                            "Gravity"

 Stress_constitutive_model           "Elastic"

 Stress_initialisation_type          "Standard"

 Viscoplasticity_model               "Standard"

 Viscoplasticity_flag                0

 Contact_constitutive_model          "Elastic"

 Contact_initialisation_type         "Standard"

 Displacement_reinit_flag            0

 State_reinit_flag                   1

 Poroelastic_init_flag               1

 Time_curve                          Step_scurve

   

 

* Geostatic_control_data      

! ---------------------------------

 Set_name                            "Tectonic"

 Stress_constitutive_model           "Elastic"

 Stress_initialisation_type          "None"

 Viscoplasticity_model               "Standard"

 Viscoplasticity_flag                0

 Contact_constitutive_model          "Elastic"

 Contact_initialisation_type         "None"

 

 

* Geostatic_control_data      

! ---------------------------------

 Set_name                            "Contact_release"

 Stress_constitutive_model           "Elastic"

 Stress_initialisation_type          "Standard"

 Viscoplasticity_model               "Standard"

 Viscoplasticity_flag                0

 Contact_constitutive_model          "Standard"    

 Contact_initialisation_type         "Standard"

 Displacement_reinit_flag            1

 State_reinit_flag                   1

 Poroelastic_init_flag               1

 Time_curve                          Step_scurve

 

 

* Geostatic_control_data    

! ---------------------------------

 Set_name                            "Elastic_release"

 Stress_constitutive_model           "Standard"

 Stress_initialisation_type          "Standard"

 Viscoplasticity_model               "Standard"

 Viscoplasticity_flag                0

 Contact_constitutive_model          "Standard"    

 Contact_initialisation_type         "Standard"

 Displacement_reinit_flag            1

 State_reinit_flag                   1

 Poroelastic_init_flag               1

 Time_curve                          Step_scurve

 

 

1Four default different Geostatic_control_data sets are defined with different options appropriate for each type of geostatic stage (i.e. gravity initialization, tectonic load, contact release and constitutive model release).

 

2Note that data that may not be relevant to the present case may be defined for the sake of general usability for different models (e.g. viscoplastic options are not relevant to the current model as there is no formation modelled with viscoplastic properties)

 

3The geostatic sets defined here are available to be assigned to the different simulation stages within the main data file.

 

4Note that more geostatic sets with different options may be added to the file if required.

 

 

 

 

geost_002_Case07.dat file

 

Below it is shown the data defined in the main simulation data file to assign the appropriate geostatic set at each stage.

 

Data File

 

 

* Geostatic_control_data

! ----------------------------------------

 Include_set_name              "Gravity"

 

 

* Geostatic_control_data

! ----------------------------------------

 Include_set_name              "Tectonic"

 

 

* Geostatic_control_data

! ----------------------------------------

 Include_set_name              "Contact_release"

 

 

* Geostatic_control_data

! ----------------------------------------

 Include_set_name              "Elastic_release"

 

1In Geostatic_control_data the keyword Include_set_name may be used to assign the appropriate geostatic set (by name) from the geostatic.set file.

 

2For the present case each of the geostatic sets is assigned at a different simulation stage.

 

 

The data  and result files for the project are in directory: geost_002\Exercises\Case7