Changes between Version 504 and Version 505 of doc/app/initialization_parameters


Ignore:
Timestamp:
Apr 7, 2022 11:01:25 PM (3 years ago)
Author:
r.rauterkus
Comment:

Change of the parameter recycling_method_for_thermodynamic_quantities to recycling_method and adding/renaming options

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  • doc/app/initialization_parameters

    v504 v505  
    10571057If the damping factor is too low, gravity waves can develop within the damping domain and if the damping factor is too high, gravity waves can develop in front of the damping domain.
    10581058
    1059 Note that the method has no effect if [#recycling_method_for_thermodynamic_quantities recycling_method_for_thermodynamic_quantities] = 'absolute_value'.
     1059Note that the method has no effect if [#recycling_method recycling_method] = 'absolute_value' or [#recycling_method recycling_method] = 'absolute_value_thermodynamic'.
    10601060
    10611061Detailed information about the damping can be found in the documentation of the [../../tec/noncyclic non-cyclic lateral boundary conditions].
     
    17721772|----------------
    17731773{{{#!td style="vertical-align:top"
    1774 [=#recycling_method_for_thermodynamic_quantities '''recycling_method_for_thermodynamic_quantities''']
     1774[=#recycling_method '''recycling_method''']
    17751775}}}
    17761776{{{#!td style="vertical-align:top"
     
    17811781}}}
    17821782{{{#!td
    1783 If [#turbulent_inflow turbulent_inflow] = .TRUE., two recycling methods for the thermodynamic quantities theta and q are available:\\\\
    1784 
    1785 'turbulent_fluctuation': Turbulent fluctuations of theta (and q if humidity = .TRUE.) are recycled and added to the inflow profile, see [#turbulent_inflow turbulent_inflow] for a detailed description. This method is the default method and is also used for all other prognostic quantities. If surface heating/cooling or a surface waterflux is applied, a horizontal temperature (humidity) gradient inside the boundary layer will develop, because the temperature/humidity profiles at the inflow are constant. The resulting horizontal differences in buoyancy can trigger an undesired circulation inside the entire domain and instabilities at the inflow boundary (see [#pt_damping_factor pt_damping_factor]).\\\\
    1786 
    1787 'absolute_value': The absolute instantaneous values of theta (and q if humidity = .TRUE.) are recycled, so that the potential temperature (humidity) values at the inflow boundary and the recycling plane are identical. With this method there is no horizontal temperature (humidity) gradient and thus the circulation and the instabilities at the inflow boundary will not occur. Note that the mean inflow profile of the potential temperature (humidity) will now change in time (growing boundary layer), in contrast to the inflow profile of all other quantities (e.g. u,v,w) that are constant. In order to avoid this mismatch, the boundary layer height should be kept constant by applying a [#large_scale_subsidence large_scale_subsidence] to scalar quantities.
     1783If [#turbulent_inflow turbulent_inflow] = .TRUE., three recycling methods are available:\\\\
     1784
     1785'turbulent_fluctuation': Turbulent fluctuations of all prognostic variables are recycled and added to the inflow profile, see [#turbulent_inflow turbulent_inflow] for a detailed description. This method is the default method. If surface heating/cooling or a surface waterflux is applied, a horizontal temperature (humidity) gradient inside the boundary layer will develop, because the temperature/humidity profiles at the inflow are constant. The resulting horizontal differences in buoyancy can trigger an undesired circulation inside the entire domain and instabilities at the inflow boundary (see [#pt_damping_factor pt_damping_factor]).\\\\
     1786
     1787'absolute_value': The absolute instantaneous values of all prognostic variables but vertical velocity are recycled, so that the values at the inflow boundary and the recycling plane are identical (for vertical velocity, still only the turbulent fluctuations are recycled). With this method there is no horizontal temperature (humidity) gradient and thus the circulation and the instabilities at the inflow boundary will not occur. Note that the mean inflow profiles of  all prognostic variables but vertical velocity will now change in time (growing boundary layer).\\\\
     1788
     1789'absolute_value_thermodynamic_quantities': The absolute instantaneous values of potential temperature and (if present) humidity are recycled. For all other prognostic variables the turbulent fluctuations are recycled. With this method there is no horizontal temperature (humidity) gradient and thus the circulation and the instabilities at the inflow boundary will not occur. Note that the mean inflow profiles of potential temperature (humidity) will now change in time (growing boundary layer), in contrast to the inflow profile of all other quantities (e.g. u,v,w) that are constant. In order to avoid this mismatch, the boundary layer height should be kept constant by applying a [#large_scale_subsidence large_scale_subsidence] to scalar quantities.
    17881790}}}
    17891791|----------------