Changes between Version 30 and Version 31 of doc/app/par


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Timestamp:
Jul 28, 2023 7:57:15 AM (16 months ago)
Author:
raasch
Comment:

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  • doc/app/par

    v30 v31  
    2525The groups must be given in this order, the last groups, {{{&<module_name>_parameters}}} and {{{&user_parameters}}}, may be omitted. The namelist groups differ as follows:
    2626
    27   * [../initialization_parameters initialization parameters] steer the basic settings of the model run. They define e.g. the number of the grid points, the numerical schemes to be used, initial and boundary conditions to be applied, how the three-dimensional fields are initialized at the beginning of a model run (constant  value profiles or 1D-model-pre-run, the initial temperature profile etc.). These parameters apply to the total model run and thus **can not be changed with restart runs**! If one tries to change these values within the namelist input file of a restart run, then these changes are ignored (sole exception is the parameter [../initialization_parameters#initializing_actions initializing_actions], which must be given the value '' 'read_restart_data' '' for restart runs).
     27  * [https://docs.palm-model.org/latest/Reference/LES_Model/Namelists/#initialization-parameters initialization parameters] steer the basic settings of the model run. They define e.g. the number of the grid points, the numerical schemes to be used, initial and boundary conditions to be applied, how the three-dimensional fields are initialized at the beginning of a model run (constant  value profiles or 1D-model-pre-run, the initial temperature profile etc.). These parameters apply to the total model run and thus **can not be changed with restart runs**! If one tries to change these values within the namelist input file of a restart run, then these changes are ignored (sole exception is the parameter [https://docs.palm-model.org/latest/Reference/LES_Model/Namelists/#initialization_parameters--initializing_actions initializing_actions], which must be given the value '' 'read_restart_data' '' for restart runs).
    2828       
    29   * [../runtime_parameters runtime parameters] generally steer actions to be carried out during a model run. One can select for example, at which times plot output should happen and which variables are to be written. Additionally one **must specify the time to be simulated**. Run parameters only apply to the actual run (job) and with **each restart run other values may be declared** (if runs are restarted automatically, parameters will usually keep their values, provided that the namelist input file was not changed by the user in the meantime).
     29  * [https://docs.palm-model.org/latest/Reference/LES_Model/Namelists/#runtime-parameters runtime parameters] generally steer actions to be carried out during a model run. One can select for example, at which times plot output should happen and which variables are to be written. Additionally one **must specify the time to be simulated**. Run parameters only apply to the actual run (job) and with **each restart run other values may be declared** (if runs are restarted automatically, parameters will usually keep their values, provided that the namelist input file was not changed by the user in the meantime).
    3030       
    3131  * module parameters behave like run parameters. Module parameters determine the behavior of the additional modules. '''The respective modules are automatically switched on by putting their namelist groups into the parameter file.''' Instead of removing the specific namelist group, you can also switch off a module by setting the parameter {{{switch_off_module = .T.}}}. This parameter is defined for each namelist group, except {{{&initialization_parameters}}} and {{{&runtime_parameters}}}.
    3232
    33   * [wiki:doc/app/user_parameters user-defined parameters] are assigned by the user within the namelist group name {{{&user_parameters}}}. They steer actions programmed by the user.
     33  * [https://docs.palm-model.org/latest/Reference/LES_Model/Namelists/#user-parameters user-defined parameters] are assigned by the user within the namelist group name {{{&user_parameters}}}. They steer actions programmed by the user.
    3434
    3535In addition to this, further namelist groups may also be declared (all within routine [source:palm/trunk/SOURCE/user_module.f90 user_parin]). A simple but complete example of the input file PARIN can be found [../examples/cbl here].