[Shanaylla]

Hi,

It is not the first time I encounter this problem. I am meshing multiple annular hollow pipes surrounded by a fluid domain. FLuid flows internally and externally to the pipes (attached figure).

Fluid enters from a plenum, then it is divided into two flows: internal (to the pipes) and an external flow until the other plenum is reached (the outlet plenum).

The attached figure is the first interface that the fluid meets when facing the multiple annular pipes. Right there I am getting this odd mesh that has some of the surface elements belonging to one face and the others belonging the opposite face. How can I have just only one surface entire meshed?

I would really appreciate some enlightenment here.