[maHein]

Hello everybody,

interpolation of cell values (e.g. volScalarField) to face values (e.g. surfaceScalarField) for the complete domain is quite straightforward - see rhoCentralFoam:

surfaceScalarField rho_pos
(
    fvc::interpolate(rho, pos, "reconstruct(rho)")
);

However, I just need a single interpolated face value of a specific faceI. Is there a way to perform such an interpolation for a single face? This way I can skip the computational expensive cell->face interpolation of the whole domain.

Kind regards

Martin

[joytonight]

you can use ref() to get a reference to its Internal field and then you can access each value surface value.

for example,

surfaceScalarField gradU(...);
ScalarField gradUIn=gradU.ref();
gradUIn[faceI]= ...;