Différences

Ci-dessous, les différences entre deux révisions de la page.

--- sunfluidh:simulation_management_setup_namelist [2016/11/29 15:59] – [Full data set of the namelist] yann
+++ sunfluidh:simulation_management_setup_namelist [2019/10/31 17:44] – yann
@@ Ligne 27: / Ligne 27: @@
 ===== Definition of the data set =====
 -----
-==== Restart_Parameter ====
+----
+==== Restart the simulation ====
+----
+**Restart_Parameter**
    * Type : Integer Value
    * This data indicates how is initialized the simulation :
@@ Ligne 34: / Ligne 38: @@
      * 3 : The simulation is resumed from the last backup file built during the last time step of the previous simulation. Useful to continue a incompleted simulation. The number 3 must be present in the file num_sav_xxxxx.d (proof that the previous simulation is correctly completed), otherwise the numbers 0, 1 or 2 (related to the previous cases) will be present.
-==== Steady_Flow_Stopping_Criterion_Enabled ====
+----
+==== Stopping criteria ====
+----
+**Steady_Flow_Stopping_Criterion_Enabled**
    * Type : Boolean value
    * Activation of the stopping criterion for steady flow (based on the L2-norm of the time variation of physical quantities).
-==== Steady_Flow_Stopping_Criterion ====
+**Steady_Flow_Stopping_Criterion**
    * Type : Real value
    * When the L2-norm of the time variation of physical quantities is lower than this value, the simulation is stopped and the solution corresponds to a steady flow.
-==== Number_Temporal_Iterations ====
+**Number_Temporal_Iterations**
    * Type : Integer value
    * This value is the maximum of time iterations performed by the code before stopping.
-==== Final_Time ====
+**Final_Time**
    * Type : Real value
    * This value is the physical time limit reached by the simulation before stopping.
-==== TimeStep_Type =====
+<note>
+The simulation stops as soon as one of these conditions is achieved.
+</note>
+----
+==== Numerical time step ====
+----
+**TimeStep_Type**
    * Type : Integer value
    * Selection of way to define the numerical time step :
@@ Ligne 54: / Ligne 71: @@
      * -1 : The time step evolves lineraly between the values given by "Timestep_min" and "Timestep_max". The range of variation is defined by the variable "Iterations_For_Timestep_Linear_Progress" (in time iteration number, see further).
      * 1 : The time step is calculated for each time iteration by means of the CFL parameter. The CFL parameter can be constant, it is thus defined by the variable "CFL_Max".\\ It can also evolve linearly between the values given by  "CFL_Min" and "CFL_Max". The range of variation is defined by the variable "Iterations_For_Timestep_Linear_Progress" (in time iteration number, see further).
-==== Timestep_min ====
+**Timestep_min**
    * Type : Real value
    * Minimum value of the time step. This variable can be omitted when the time step is constant.
-==== Timestep_max ====
+**Timestep_max**
    * Type : Real value
    * Maximum value of the time step. This variable set the value of the time step when it is constant.
-==== CFL_min ====
+**CFL_min**
    * Type : Real value. This variable can be omitted when the time step is constant.
-   * Minimum value of the CFL parameter.
+   * Minimum value of the CFL parameter (can be omitted, in this case **CFL_Max** will define the CFL value).
 ==== CFL_max ====
    * Type : Real value
-   * Maximum value of the CFL parameter. This variable set the value of the CFL parameter when it is constant.
+   * Maximum value of the CFL parameter. This variable set the value of the CFL parameter when it is constant (in this case, **CFL_Min** is useless).
-==== Iterations_For_Timestep_Linear_Progress ====
+**Iterations_For_Timestep_Linear_Progress**
    * Type : Integer value
    * Number of time iterations over which the CFL parameter or the time step can evolve linearly. When the time step or the CFL parameter are constant, this variable must not set to a value greater than 1. It could actually be omitted (this default value is 1).
-==== Simulation_Backup_Rate ====
+----
+==== Recording rates for different kind of files ====
+----
+==== - For backup/restart files : ====
+**Simulation_Backup_Rate**
    * Type : Integer value
    * This variable defines the recording rate, __in time iteration units__ , of the backup files (for instance, when "Simulation_Backup_Rate=1000" a data backup is carried out for all time iteration numbers that are a multiple of 1000).\\ Backup data are dispatched in two files that are named save_var_yyyyy_n.d and save_fld_yyyyy_n.d ('yyyyy' is the subdomain number for simulations based on the MPI domain-decomposition approach, n= 1 or 2 for temporary backup files and n=3 for the backup files created during the last time step of the simulation).
-==== Field_Recording_Rate ====
+==== - For snapshot files : ====
+**Field_Recording_Rate**
    * Type : Real value
    * This variable defines the recording rate, __in time units__ , of instantaneous fields (for instance, when "Field_Recording_Rate=1.5" an instantaneous field file is created as soon as the time value is a multiple of 1.5).\\ Instantaneous field files are named res_xxxxxxx_yyyyy.d ('yyyyy' is the subdomain number for simulations based on the MPI domain-decomposition approach, 'xxxxxxx' is the file number). The intantaneous fields of the physical quantities are defined with the namelist "Instantaneous_Fields_Listing".
-==== Start_Time_For_Statistics ====
+==== - For statistics files : ====
+**Start_Time_For_Statistics**
    * Type : Real value
    * Time from which the statistical fields are calculated.
-==== Time_Range_Statistic_Calculation ====
+**Time_Range_Statistic_Calculation**
    * Type : Real value
    * Time range over which statistical fields are calculated. When this time range has been covered, statistical fields are recorded in a file named rst_xxxxxxx_yyyyy.d ('yyyyy' is the subdomain number for simulations based on the MPI domain-decomposition approach, 'xxxxxxx' is the file number). If the simulation is not completed a new cycle of statistical calculation is initialized. The statistical quantities are defined with the namelist "Statistical_Fields_Listing".
-==== Probe_Recording_Rate ====
+==== - For probe time-series files : ====
+**Probe_Recording_Rate**
    * Type : Integer value
    * This variable defines the recording rate, __in time iteration units__ , of time series associated to the probes distributed over the domain (see the namelist "Probe_Location"). The physical quantities linked to the probe time-series are defined with the namelist "Probe_Quantities_Enabled". For instance, when "Probe_Recording_Rate=10", a new value is added to probe time-series for all time iteration numbers that are a multiple of 10).