[sunagra27]

Dear All,



I am trying to obtain the face IDs of a particular patch in the geometry. I am using Openfoam 5 version.



I wrote this code shown below.

code
    #{

    const fvPatch& mesh = this->patch();
    //const vectorField& Cf = mesh.Cf();
    
    const fvBoundaryMesh& boundaryMesh = mesh.boundaryMesh();

    forAll(mesh.boundaryMesh()[patch], facei)
      {
            const label& face = boundaryMesh[patch].start() + facei;        // Face index
        }
    #};

When I output Cf, it cleary gives the faceCentre coordinates as expected. Likewise, I try to loop over the boundaryMesh patch to obtain label of a face. But, I am unable to execute this. It throws few errors mentioned below. How to clear these errors.?


Error 1:

invalid use of non-static member function ‘const Foam::fvPatch& Foam::fvPatchField<Type>:atch() const [with Type = double]’
/opt/openfoam5/src/OpenFOAM/lnInclude/UList.H:430:30: note: in definition of macro ‘forAll’
for (Foam::label i=0; i<(list).size(); i++)

Error 2:

declared here
const fvPatch& patch() const

What wrong am I doing here in the code?


Any leads will with appreciated.


Regards,
Sunag R A.