Difference between revisions of "Nesting models"
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==Setting up the files== | ==Setting up the files== | ||
| − | The whole issue is how to define the open-boundary conditions for the submodel. | + | The whole issue is how to define the open-boundary conditions for the submodel and the relaxation condition. |
Basically we suggest to use a [[Flather radiation condition]] at the open boundaries that will radiate the water level and the barotropic flux in conjunction with a flow relaxation scheme spanning a few cells from the open-boundaries to the interior for the velocities (''u'' and ''v''). | Basically we suggest to use a [[Flather radiation condition]] at the open boundaries that will radiate the water level and the barotropic flux in conjunction with a flow relaxation scheme spanning a few cells from the open-boundaries to the interior for the velocities (''u'' and ''v''). | ||
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!Flather radiation scheme using the father model as a reference solution. | !Flather radiation scheme using the father model as a reference solution. | ||
RADIATION : 2 | RADIATION : 2 | ||
| − | LOCAL_SOLUTION : | + | LOCAL_SOLUTION : 5 |
!Activate the Flow relaxation scheme | !Activate the Flow relaxation scheme | ||
Revision as of 11:49, 23 February 2012
Here is a guide on configuring MOHID Water with nested models.
Contents
In MOHID GUI
- Create a new project in MOHID GUI,
- Create a Model by inserting a new Simulation,
- Setup your model
- Create a Submodel by inserting a new Simulation from the current Simulation. The new simulation should fold into the previous one.
- Setup the model
Setting up the files
The whole issue is how to define the open-boundary conditions for the submodel and the relaxation condition. Basically we suggest to use a Flather radiation condition at the open boundaries that will radiate the water level and the barotropic flux in conjunction with a flow relaxation scheme spanning a few cells from the open-boundaries to the interior for the velocities (u and v).
Keywords in Hydrodynamic.dat
In the submodel hydrodynamic file
SUBMODEL : 1 !Flather radiation scheme using the father model as a reference solution. RADIATION : 2 LOCAL_SOLUTION : 5 !Activate the Flow relaxation scheme DATA_ASSIMILATION : 1
Keywords in Assimilation.dat
In the submodel assimilation file
<beginproperty> NAME : velocity U UNITS : m/s DIMENSION : 3D OUTPUT_HDF : 1 COLD_RELAX_PERIOD : 432000 COLD_ORDER : 5 <<begin_field>> DEFAULTVALUE : 0 INITIALIZATION_METHOD : HDF FILE_IN_TIME : HDF FILENAME : ../../GeneralData/Reference_vel_U.hdf5 TYPE_ZUV : z <<end_field>> <<begin_coef>> DEFAULTVALUE : 1e9 TYPE_ZUV : u FILE_IN_TIME : NONE REMAIN_CONSTANT : 1 INITIALIZATION_METHOD : ASCII_FILE FILENAME : ../../GeneralData/RelaxationCoefs_U.dat <<end_coef>> <endproperty> <beginproperty> NAME : velocity V UNITS : m/s DIMENSION : 3D OUTPUT_HDF : 1 COLD_RELAX_PERIOD : 432000 COLD_ORDER : 5 <<begin_field>> DEFAULTVALUE : 0 INITIALIZATION_METHOD : HDF FILE_IN_TIME : HDF FILENAME : ../../GeneralData/Reference_vel_V.hdf5 TYPE_ZUV : z <<end_field>> <<begin_coef>> DEFAULTVALUE : 1e9 TYPE_ZUV : v FILE_IN_TIME : NONE REMAIN_CONSTANT : 1 INITIALIZATION_METHOD : ASCII_FILE FILENAME : ../../GeneralData/RelaxationCoefs_V.dat <<end_coef>> <endproperty>
