[durer]

Hi,
I want to simulate particles flow inside a nozzle and I need to view the particles that exit form the end of the nozzle. So I created the nozzle volume mesh and the cylinder volume mesh attached at the end of the nozzle to define the domain where particles come out. BUT I need to define boundary condition on the surface at the end of the nozzle (pression = 0 on the outlet). So I defined this surface like outlet_p in the geo file attached, but I have problems with it. it is a surface inside the volume mesh.

What happen when I run gmshToFoam at the msh file generated from Gmsh is this error message:

--> FOAM Warning :
From function int main(int, char**)
in file gmshToFoam.C at line 972
Could not match gmsh face 3(0 458 1) to any of the interior or exterior faces that share the same 0th point


then when I check the mesh with checkMesh this error appear:

Checking patch topology for multiply connected surfaces...
Patch Faces Points Surface topology
outlet_p 0 0 ok (empty)
walls 11512 5780 ok (non-closed singly connected)
inlet_03 30 22 ok (non-closed singly connected)
inlet_01 30 22 ok (non-closed singly connected)
inlet_02 30 22 ok (non-closed singly connected)
outlet 2574 1298 ok (non-closed singly connected)

Checking geometry...
Overall domain bounding box (-15.4449 -50 -24.5343) (27.8181 80 24.5343)
Mesh has 3 geometric (non-empty/wedge) directions (1 1 1)
Mesh has 3 solution (non-empty) directions (1 1 1)
Boundary openness (1.25768e-17 1.8403e-17 2.36291e-17) OK.
Max cell openness = 2.88621e-16 OK.
Max aspect ratio = 11.7249 OK.
Minimum face area = 0.162069. Maximum face area = 3.41207. Face area magnitudes OK.
Min volume = 0.0414673. Max volume = 2.02451. Total volume = 19201.7. Cell volumes OK.
Mesh non-orthogonality Max: 65.7163 average: 24.2543
Non-orthogonality check OK.
Face pyramids OK.
Max skewness = 0.896665 OK.
Coupled point location match (average 0) OK.

Failed 1 mesh checks.

End


Please anyone can fix this issue??
Thanks a lot