[phani45]

Hi foamers,
can any one of tell me how can we find the distance between an internal cell from an inlet in openfoam
I need to use it as part of my code not as post processing
Regards,
Phanindra

[Zhiheng Wang]

label patchID = mesh.boundaryMesh().findPatchID("name of your patch");
labelList InternalFieldNextToPatch = mesh.boundaryMesh()[patchID].faceCells(); //// Gives List of cell IDs label next to patch//////

DynamicList<vector> Distance(0); /// distace betwen face center of patch and cell center of cell next to patch

if ( InternalFieldNextToPatch.size() == mesh.boundaryMesh()[patchID].size() )
// check weather patch size and list of cell ids is same or not/// this code may or may not work after usting refinemesh /////
{
forAll(InternalFieldNextToPatch, I)
{
Distance.append(mesh.C()[InternalFieldNextToPatch[I]] - mesh.Cf().boundaryField()[patchID][I]
}
}
save in some distance.H n include or you can also use

OR use

scalarField Dis = 1.0/mesh.deltaCoeffs().boundaryField()[patchID];

If you are using 4.z, plus or 5.x version at place of boundaryField() use boundaryFieldRef() I hope I did not do any typing mistake in code

[phani45]

Does the procedure works even for the internal cells and boundary patch distance?

[Zhiheng Wang]

Originally Posted by phani45

Does the procedure works even for the internal cells and boundary patch distance?

Yes mesh.deltaCoeffs()[patchID] will give inverse of distance between boundary face n cell center. If you want
Distance between two internal Fields use [cellIDs] if you do not know cellIDs use the code I wrote.

[phani45]

Thanks . I will give it a try