Flow Import
The Imported Flow feature is used as the link to the CFD Data (CGNS) function. This is a singleton feature.
Selection
Select the Geometric entity level as Domain (the default) or Boundary; then make the necessary selections. The choice defines if data is mapped to boundaries or the full volume mesh. This selection is important as some CGNS data is only stored on boundaries and not defined in the full volume.
Variables to Map
Set Imported flow data to the CFD Data (CGNS) function where the data to map is located. Then for all fields that should be mapped, select the function name associated with the field from the list. The default selected for all fields is No mapping.
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For the Pressure, select the associated function. If necessary, select Constrain the pressure on exterior boundaries.
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For the Density, select the associated function. If necessary, select Constrain the density on exterior boundaries.
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For the Velocity, select Map components, then for the desired components select the associated function. If not selected, the component is Set to zero (the default).
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For the Temperature, select the associated function. If necessary, select Constrain the temperature on exterior boundaries.
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For the Turbulent viscosity, select the associated function. If necessary, select Constrain the turbulent viscosity on exterior boundaries.
All the mapped fields can be constrained on exterior boundaries. If selected, this option will apply a boundary condition (a constraint) on the underlying mapping problem. The mapped solution will be forced to be exactly equal to the CGNS import on these boundaries. As the mapping relies on a consistent stabilization or smoothing, the solution can deviate from the imported data. So if the value at boundaries is especially important, these options can be selected. Similarly, the Symmetry and No Slip conditions are also used to add control to the mapping.
Smoothing
The mapping relies on a consistent stabilized mapping of the data on the dependent variable fields and the computational mesh. These settings are used to control the amount of numerical smoothing applied. The amount is mesh dependent but controlled by the Diffusion constant value. Select the Smoothing method as Isotropic diffusion (the default) or None.