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Summary

When mapMethod option of turbulentDFSEMInlet BC is removed, it raises FOAM FATAL IO ERROR although under turbulentDFSEMInletFvPatchVectorField.H was stated for its usage was stated to be optional:

     Property  | Description         | Required         | Default value
     mapMethod | Method to map reference values | no | planarInterpolation

--> FOAM FATAL IO ERROR: 
'mapMethod' not found in dictionary "/home/snoopy2/kuta/OpenFOAM/kuta-v1806/run/channel395DFSEM/0/U.boundaryField.inlet"

file: /home/snoopy2/kuta/OpenFOAM/kuta-v1806/run/channel395DFSEM/0/U.boundaryField.inlet

    From function const Foam::entry& Foam::dictionary::lookupEntry(const Foam::word&, bool, bool) const
    in file db/dictionary/dictionary.C at line 332.

FOAM exiting

Steps to reproduce

Please consider tutorials/incompressible/pimpleFoam/LES/channel395DFSEM case.

Remove mapMethod under 0/U:

    inlet
    {   
        type            turbulentDFSEMInlet;
        ...
        mapMethod       nearestCell;
        ...
    }   

to

    inlet
    {   
        type            turbulentDFSEMInlet;
        ...
    }   

Then execute the following respectively:

blockMesh

decomposePar

What is the expected correct behavior?

Either the documentation in turbulentDFSEMInletFvPatchVectorField.H should be corrected, or the method according to the documentation.