Changes between Version 7 and Version 8 of Users/Model Interfacing/AGRIF


Ignore:
Timestamp:
2018-08-30T16:15:59+02:00 (2 years ago)
Author:
jchanut
Comment:

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  • Users/Model Interfacing/AGRIF

    v7 v8  
    158158  }}} 
    159159 
    160  * Number of ghost cells change: 
     160 * Important notice concerning the change of ghost cells number: 
    161161The default number of ghost cells (i.e. the number of cells that serve as open boundary data provision) has been increased from 1 to 3 in NEMO 4.0. This allows to properly handle boundary conditions for numerical scheme that have a discretization order greater than 2. On the user point of view this does not change anything except in the definition of level 1 grids in the AGRIF_FixedGrids.in file. In order to retrieve exactly the position of a nested grid in NEMO 4.0 one has to shift indices by 2 points to the south-west. Taking the VORTEX example above for NEMO 4.0, the "old" NEMO 3.6 corresponding file would contain: 
    162162{{{ 
     
    1651650 
    166166}}} 
     167Of course, output files are now greater by 4 points in each direction. 
    167168 
    168169== Available in the forthcoming 4.0