sunfluidh:simulation_management_setup_namelist
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Ci-dessous, les différences entre deux révisions de la page.
Les deux révisions précédentesRévision précédenteProchaine révision | Révision précédenteProchaine révisionLes deux révisions suivantes | ||
sunfluidh:simulation_management_setup_namelist [2016/11/12 12:34] – yann | sunfluidh:simulation_management_setup_namelist [2019/10/31 17:11] – yann | ||
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This data setup allows the user to set the time parameters of the code in order to : | This data setup allows the user to set the time parameters of the code in order to : | ||
* perform the numerical simulation (time step, stopping criteria...) | * perform the numerical simulation (time step, stopping criteria...) | ||
- | * record the results associated to time series of probes, instantaneous quantity fields, statistical quantities. | + | * record the results associated to time series of probes, instantaneous |
* record the backup/ | * record the backup/ | ||
+ | ===== Full data set of the namelist ===== | ||
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----- | ----- | ||
+ | ===== Definition of the data set ===== | ||
+ | ----- | ||
+ | |||
+ | ---- | ||
+ | ==== Restart the simulation ==== | ||
+ | ---- | ||
==== Restart_Parameter ==== | ==== Restart_Parameter ==== | ||
* Type : Integer Value | * Type : Integer Value | ||
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* 1 or 2 : The simulation is resumed from a temporary backup file recorded during the previous simulation. Useful to resume a simulation suddenly interrupted. As the temporary backup file a regularly removed during a simulation, only the two last files created by the code are available. They correspond to the number 1 or 2. The number of last file created is recorded in the file num_sav_xxxxx.d (xxxxx correspond to the MPI process number when the simulation is performed in a domain decomposition approach). | * 1 or 2 : The simulation is resumed from a temporary backup file recorded during the previous simulation. Useful to resume a simulation suddenly interrupted. As the temporary backup file a regularly removed during a simulation, only the two last files created by the code are available. They correspond to the number 1 or 2. The number of last file created is recorded in the file num_sav_xxxxx.d (xxxxx correspond to the MPI process number when the simulation is performed in a domain decomposition approach). | ||
* 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. | * 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. | ||
+ | |||
+ | ---- | ||
+ | ==== Stopping criteria ==== | ||
+ | ---- | ||
==== Steady_Flow_Stopping_Criterion_Enabled ==== | ==== Steady_Flow_Stopping_Criterion_Enabled ==== | ||
* Type : Boolean value | * Type : Boolean value | ||
- | * Activation of the stopping criterion for steady flow (based on the L2-norm of the time variation of quantities). | + | * Activation of the stopping criterion for steady flow (based on the L2-norm of the time variation of physical |
==== Steady_Flow_Stopping_Criterion ==== | ==== Steady_Flow_Stopping_Criterion ==== | ||
* Type : Real value | * Type : Real value | ||
- | * When the L2-norm of the time variation of quantities is lower than this value, the simulation is stopped and the solution corresponds to a steady flow. | + | * When the L2-norm of the time variation of physical |
==== Number_Temporal_Iterations ==== | ==== Number_Temporal_Iterations ==== | ||
* Type : Integer value | * Type : Integer value | ||
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* Type : Real value | * Type : Real value | ||
* This value is the physical time limit reached by the simulation before stopping. | * This value is the physical time limit reached by the simulation before stopping. | ||
+ | |||
+ | ---- | ||
+ | ==== Numerical time step ==== | ||
+ | ---- | ||
+ | |||
+ | ==== TimeStep_Type ===== | ||
+ | * Type : Integer value | ||
+ | * Selection of way to define the numerical time step : | ||
+ | * 0 : The time step is constant and defined by the user by means of the variable " | ||
+ | * -1 : The time step evolves lineraly between the values given by " | ||
+ | * 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 " | ||
+ | ==== Timestep_min ==== | ||
+ | * Type : Real value | ||
+ | * Minimum value of the time step. This variable can be omitted when the time step is constant. | ||
+ | ==== 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 ==== | ||
+ | * Type : Real value. This variable can be omitted when the time step is constant. | ||
+ | * Minimum value of the CFL parameter. | ||
+ | ==== CFL_max ==== | ||
+ | * Type : Real value | ||
+ | * Maximum value of the CFL parameter. This variable set the value of the CFL parameter when it is constant. | ||
+ | ==== 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 ==== | ||
+ | * Type : Integer value | ||
+ | * This variable defines the recording rate, __in time iteration units__ , of the backup files (for instance, when " | ||
+ | ==== Field_Recording_Rate ==== | ||
+ | * Type : Real value | ||
+ | * This variable defines the recording rate, __in time units__ , of instantaneous fields (for instance, when " | ||
+ | ==== Start_Time_For_Statistics ==== | ||
+ | * Type : Real value | ||
+ | * Time from which the statistical fields are calculated. | ||
+ | ==== 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 (' | ||
+ | ==== 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 " |
sunfluidh/simulation_management_setup_namelist.txt · Dernière modification : 2022/01/10 10:34 de yann