[Yujuan]

Hi all,


I know that .patchInternalField() can be used to access the first cell center near the boundary. Now I want to access the first surface center near the boundary (the surface center which is in symmetry with the boundary point regarding to the first cell center near the boundary), is there any functions like patchInternalField, or what else should I do?

[Wenyuan]

Hi Yujuan,

I don't think such a built-in function exists. Since "the first surface" is simply not defined in a general polyhedral framework like OpenFOAM. For instance, how do you define the first surface of a tetrahedron adjacent to a patch?

According to your description, you are dealing with some special types of cells. In this case, you need to write your own code to find that surface, which is not difficult.

[Yujuan]

Originally Posted by Wenyuan

Hi Yujuan,

I don't think such a built-in function exists. Since "the first surface" is simply not defined in a general polyhedral framework like OpenFOAM. For instance, how do you define the first surface of a tetrahedron adjacent to a patch?

According to your description, you are dealing with some special types of cells. In this case, you need to write your own code to find that surface, which is not difficult.

Hi Wenyuan,


Thanks a lot for your suggestions. I'll have a try.

[cdegroot]

I would suggest looping through the cells returned by patchInternalField and then writing code to test each of the faces of those cells according to your criterion (which seems quite specialized to a particular application).