Changeset 2308
- Timestamp:
- 2010-10-25T16:41:57+02:00 (14 years ago)
- Location:
- branches/DEV_r1826_DOC/DOC/TexFiles
- Files:
-
- 2 edited
-
Chapters/Chap_LBC.tex (modified) (8 diffs)
-
Namelist/nambdy (modified) (1 diff)
Legend:
- Unmodified
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branches/DEV_r1826_DOC/DOC/TexFiles/Chapters/Chap_LBC.tex
r2273 r2308 739 739 740 740 %-----------------------------------------nambdy-------------------------------------------- 741 %- filbdy_mask = '' ! name of mask file (if ln_bdy_mask=.TRUE.) 742 %- filbdy_data_T = 'bdydata_grid_T.nc' ! name of data file for FRS condition (T-points) 743 %- filbdy_data_U = 'bdydata_grid_U.nc' ! name of data file for FRS condition (U-points) 744 %- filbdy_data_V = 'bdydata_grid_V.nc' ! name of data file for FRS condition (V-points) 745 %- filbdy_data_bt_T = 'bdydata_bt_grid_T.nc' ! name of data file for Flather condition (T-points) 746 %- filbdy_data_bt_U = 'bdydata_bt_grid_U.nc' ! name of data file for Flather condition (U-points) 747 %- filbdy_data_bt_V = 'bdydata_bt_grid_V.nc' ! name of data file for Flather condition (V-points) 748 %- ln_bdy_clim = .false. ! contain 1 (T) or 12 (F) time dumps and be cyclic 749 %- ln_bdy_vol = .true. ! total volume correction (see volbdy parameter) 750 %- ln_bdy_mask = .false. ! boundary mask from filbdy_mask (T) or boundaries are on edges of domain (F) 751 %- ln_bdy_tides = .true. ! Apply tidal harmonic forcing with Flather condition 752 %- ln_bdy_dyn_fla = .true. ! Apply Flather condition to velocities 753 %- ln_bdy_tra_frs = .false. ! Apply FRS condition to temperature and salinity 754 %- ln_bdy_dyn_frs = .false. ! Apply FRS condition to velocities 755 %- nbdy_dta = 1 ! = 0, bdy data are equal to the initial state 756 %- ! = 1, bdy data are read in 'bdydata .nc' files 757 %- nb_rimwidth = 9 ! width of the relaxation zone 758 %- volbdy = 0 ! = 0, the total water flux across open boundaries is zero 741 %- cn_mask = '' ! name of mask file (if ln_bdy_mask=.TRUE.) 742 %- cn_dta_frs_T = 'bdydata_grid_T.nc' ! name of data file (T-points) 743 %- cn_dta_frs_U = 'bdydata_grid_U.nc' ! name of data file (U-points) 744 %- cn_dta_frs_V = 'bdydata_grid_V.nc' ! name of data file (V-points) 745 %- cn_dta_fla_T = 'bdydata_bt_grid_T.nc' ! name of data file for Flather condition (T-points) 746 %- cn_dta_fla_U = 'bdydata_bt_grid_U.nc' ! name of data file for Flather condition (U-points) 747 %- cn_dta_fla_V = 'bdydata_bt_grid_V.nc' ! name of data file for Flather condition (V-points) 748 %- ln_clim = .false. ! contain 1 (T) or 12 (F) time dumps and be cyclic 749 %- ln_vol = .true. ! total volume correction (see volbdy parameter) 750 %- ln_mask = .false. ! boundary mask from filbdy_mask (T) or boundaries are on edges of domain (F) 751 %- ln_tides = .true. ! Apply tidal harmonic forcing with Flather condition 752 %- ln_dyn_fla = .true. ! Apply Flather condition to velocities 753 %- ln_tra_frs = .false. ! Apply FRS condition to temperature and salinity 754 %- ln_dyn_frs = .false. ! Apply FRS condition to velocities 755 %- nn_rimwidth = 9 ! width of the relaxation zone 756 %- nn_dtactl = 1 ! = 0, bdy data are equal to the initial state 757 %- ! = 1, bdy data are read in 'bdydata .nc' files 758 %- nn_volctl = 0 ! = 0, the total water flux across open boundaries is zero 759 %- ! = 1, the total volume of the system is conserved 759 760 \namdisplay{nambdy} 760 761 %----------------------------------------------------------------------------------------------- … … 807 808 \end{equation} 808 809 The width of the FRS zone is specified in the namelist as 809 \np{n b\_rimwidth}. This is typically set to a value between 8 and 10.810 \np{nn\_rimwidth}. This is typically set to a value between 8 and 10. 810 811 811 812 %---------------------------------------------- … … 837 838 838 839 The Flow Relaxation Scheme may be applied separately to the 839 temperature and salinity (\np{ln\_ bdy\_tra\_frs} = true) and840 the velocity fields (\np{ln\_ bdy\_dyn\_frs} = true). Flather840 temperature and salinity (\np{ln\_tra\_frs} = true) and 841 the velocity fields (\np{ln\_dyn\_frs} = true). Flather 841 842 radiation conditions may be applied using externally defined 842 barotropic velocities and sea-surface height (\np{ln\_ bdy\_dyn\_fla} = true)843 or using tidal harmonics fields (\np{ln\_ bdy\_tides} = true)843 barotropic velocities and sea-surface height (\np{ln\_dyn\_fla} = true) 844 or using tidal harmonics fields (\np{ln\_tides} = true) 844 845 or both. FRS and Flather conditions may be applied simultaneously. 845 846 A typical configuration where all possible conditions might be used is a tidal, … … 888 889 889 890 The input data files for the FRS conditions are defined in the 890 namelist as \np{ filbdy\_data\_T}, \np{filbdy\_data\_U},891 \np{ filbdy\_data\_V}. The input data files for the Flather conditions892 are defined in the namelist as \np{ filbdy\_data\_bt\_T},893 \np{ filbdy\_data\_bt\_U}, \np{filbdy\_data\_bt\_V}.891 namelist as \np{cn\_dta\_frs\_T}, \np{cn\_dta\_frs\_U}, 892 \np{cn\_dta\_frs\_V}. The input data files for the Flather conditions 893 are defined in the namelist as \np{cn\_dta\_fla\_T}, 894 \np{cn\_dta\_fla\_U}, \np{cn\_dta\_fla\_V}. 894 895 895 896 The netcdf header of a typical input data file is shown in Figure … … 902 903 also have a depth dimension. 903 904 904 If \np{ln\_ bdy\_clim} is set to $false$, the model expects the905 If \np{ln\_clim} is set to $false$, the model expects the 905 906 units of the time axis to have the form shown in 906 907 \ref{Fig_bdy_input_file}, $i.e.$ {\it ``seconds since yyyy-mm-dd … … 908 909 time at each timestep. Note that for this option, the time axis of the 909 910 input files must completely span the time period of the model 910 integration. If \np{ln\_ bdy\_clim} is set to $.true.$ (climatological911 integration. If \np{ln\_clim} is set to $.true.$ (climatological 911 912 boundary forcing), the model will expect either a single set of annual 912 913 mean fields (constant boundary forcing) or 12 sets of monthly mean … … 915 916 As in the OBC module there is an option to use initial conditions as 916 917 boundary conditions. This is chosen by setting 917 $\np{n b\_dta}=0$. However, since the model defines the boundary918 $\np{nn\_dtactl}=0$. However, since the model defines the boundary 918 919 geometry by reading the boundary index arrays from the input files, 919 920 it is still necessary to provide a set of input files in this … … 932 933 \label{BDY_vol_corr} 933 934 934 There is an option to force the total volume in the regional model to be constant, similar to the option in the OBC module. This is controlled by the \np{ volbdy} parameter in the namelist. A value of $\np{volbdy} = 0$ indicates that this option is not used. If $\np{volbdy} = 1$ then a correction is applied to the normal velocities around the boundary at each timestep to ensure that the integrated volume flow through the boundary is zero. If $\np{volbdy} = 2$ then the calculation of the volume change on the timestep includes the change due to the freshwater flux across the surface and the correction velocity corrects for this as well.935 There is an option to force the total volume in the regional model to be constant, similar to the option in the OBC module. This is controlled by the \np{nn\_volctl} parameter in the namelist. A value of $\np{nn\_volctl} = 0$ indicates that this option is not used. If $\np{nn\_volctl} = 1$ then a correction is applied to the normal velocities around the boundary at each timestep to ensure that the integrated volume flow through the boundary is zero. If $\np{nn\_volctl} = 2$ then the calculation of the volume change on the timestep includes the change due to the freshwater flux across the surface and the correction velocity corrects for this as well. 935 936 936 937 -
branches/DEV_r1826_DOC/DOC/TexFiles/Namelist/nambdy
r2213 r2308 2 2 &nambdy ! unstructured open boundaries ("key_bdy") 3 3 !----------------------------------------------------------------------- 4 filbdy_mask = ''! name of mask file (if ln_bdy_mask=.TRUE.)5 filbdy_data_T = 'bdydata_grid_T.nc'! name of data file (T-points)6 filbdy_data_U = 'bdydata_grid_U.nc'! name of data file (U-points)7 filbdy_data_V = 'bdydata_grid_V.nc'! name of data file (V-points)8 filbdy_data_bt_T = 'bdydata_bt_grid_T.nc' ! name of data file for Flather condition (T-points)9 filbdy_data_bt_U = 'bdydata_bt_grid_U.nc' ! name of data file for Flather condition (U-points)10 filbdy_data_bt_V = 'bdydata_bt_grid_V.nc' ! name of data file for Flather condition (V-points)11 ln_ bdy_clim = .false.! contain 1 (T) or 12 (F) time dumps and be cyclic12 ln_ bdy_vol = .true.! total volume correction (see volbdy parameter)13 ln_ bdy_mask = .false.! boundary mask from filbdy_mask (T) or boundaries are on edges of domain (F)14 ln_ bdy_tides = .true.! Apply tidal harmonic forcing with Flather condition15 ln_ bdy_dyn_fla = .true.! Apply Flather condition to velocities16 ln_ bdy_tra_frs = .false.! Apply FRS condition to temperature and salinity17 ln_ bdy_dyn_frs = .false.! Apply FRS condition to velocities18 n bdy_dta = 1 ! = 0, bdy data are equal to the initial state19 ! = 1, bdy data are read in 'bdydata .nc' files20 nb_rimwidth = 9 ! width of the relaxation zone21 volbdy = 0! = 0, the total water flux across open boundaries is zero22 ! = 1, the total volume of the system is conserved4 cn_mask = '' ! name of mask file (if ln_bdy_mask=.TRUE.) 5 cn_dta_frs_T = 'bdydata_grid_T.nc' ! name of data file (T-points) 6 cn_dta_frs_U = 'bdydata_grid_U.nc' ! name of data file (U-points) 7 cn_dta_frs_V = 'bdydata_grid_V.nc' ! name of data file (V-points) 8 cn_dta_fla_T = 'bdydata_bt_grid_T.nc' ! name of data file for Flather condition (T-points) 9 cn_dta_fla_U = 'bdydata_bt_grid_U.nc' ! name of data file for Flather condition (U-points) 10 cn_dta_fla_V = 'bdydata_bt_grid_V.nc' ! name of data file for Flather condition (V-points) 11 ln_clim = .false. ! contain 1 (T) or 12 (F) time dumps and be cyclic 12 ln_vol = .true. ! total volume correction (see volbdy parameter) 13 ln_mask = .false. ! boundary mask from filbdy_mask (T) or boundaries are on edges of domain (F) 14 ln_tides = .true. ! Apply tidal harmonic forcing with Flather condition 15 ln_dyn_fla = .true. ! Apply Flather condition to velocities 16 ln_tra_frs = .false. ! Apply FRS condition to temperature and salinity 17 ln_dyn_frs = .false. ! Apply FRS condition to velocities 18 nn_rimwidth = 9 ! width of the relaxation zone 19 nn_dtactl = 1 ! = 0, bdy data are equal to the initial state 20 ! = 1, bdy data are read in 'bdydata .nc' files 21 nn_volctl = 0 ! = 0, the total water flux across open boundaries is zero 22 ! = 1, the total volume of the system is conserved 23 23 / 24 24
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