Changes between Version 10 and Version 11 of doc/app/examples/turbinf


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Timestamp:
Feb 14, 2013 12:57:26 AM (12 years ago)
Author:
raasch
Comment:

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  • doc/app/examples/turbinf

    v10 v11  
    1515  * Horizontal boundary conditions have to be set to [../../inipar#bc_lr bc_lr] = '' 'dirichlet/radiation' ''. '''The radiation boundary condition at the outflow requires that the wall-normal velocity component at the outflow must point out of the domain at every grid point and at every timestep.''' Special care has to be taken in case of obstacles near the outflow, because their recirculations may violate this condition.
    1616
    17   * Because of the Dirichlet condition at the inflow, the flow does not require any further driving force in general. An external pressure gradient or a geostrophic wind can be used, but should have the same value as for the precursor run. Otherwise, the horizontally diverging wind field will induce vertically descending or ascending motions. A conservation of the volume flow ([../../inipar#conserve_volume_flow conserve_volume_flow] = ''.TRUE.'') should be applied with care, because it may have the same effects.
     17  * Because of the Dirichlet condition at the inflow, the flow does not require any further driving force in general. An external pressure gradient or a geostrophic wind can be used, but should have the same value as for the precursor run. Otherwise, the horizontally diverging wind field will induce vertically descending or ascending motions. An application of volume flow conservation ([../../inipar#conserve_volume_flow conserve_volume_flow] = ''.TRUE.'') should be done with care, because it may have the same effects.
    1818
    1919  * The main run allows to use a larger domain along x and y than in the precursor run.