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-   -   [Commercial meshers] Pointwise to OpenFOAM: how to handle internal face (https://www.cfd-online.com/Forums/openfoam-meshing/156765-pointwise-openfoam-how-handle-internal-face.html)

wayne14 July 13, 2015 00:17

Pointwise to OpenFOAM: how to handle internal face
 
Hi all,

Actually I am working on the pointwise official tutorial case 'BackStep'. I export the polyMesh folder and use checkMesh to examine the mesh. I got the following message:

Code:

Checking topology...
    Boundary definition OK.
***Total number of faces on empty patches is not divisible by the number of cells in the mesh. Hence this mesh is not 1D or 2D.
    Cell to face addressing OK.
    Point usage OK.
    Upper triangular ordering OK.
    Face vertices OK.
    Number of regions: 1 (OK).

Checking patch topology for multiply connected surfaces...
    Patch              Faces    Points  Surface topology                 
    buildingWall        4300    4410    ok (non-closed singly connected) 
    frontAndBack        20000    20502    ok (non-closed singly connected) 
    inlet              50      102      ok (non-closed singly connected) 
    lowerWall          100      212      ok (non-closed singly connected) 
    outlet              50      102      ok (non-closed singly connected) 
    upperWall          200      402      ok (non-closed singly connected) 

Checking geometry...
    Overall domain bounding box (0 -0.06 0) (0.6 0.42 0.06)
    Mesh (non-empty, non-wedge) directions (1 1 0)
    Mesh (non-empty) directions (1 1 0)
    All edges aligned with or perpendicular to non-empty directions.
    Boundary openness (5.89915e-18 2.79434e-18 1.65293e-16) OK.
    Max cell openness = 1.09092e-16 OK.
    Max aspect ratio = 7.51167 OK.
    Minimum face area = 9e-06. Maximum face area = 0.0013521.  Face area magnitudes OK.
    Min volume = 5.4e-07. Max volume = 4.0563e-06.  Total volume = 0.0162.  Cell volumes OK.
    Mesh non-orthogonality Max: 0 average: 0
    Non-orthogonality check OK.
    Face pyramids OK.
    Max skewness = 4.62963e-09 OK.
    Coupled point location match (average 0) OK.

Mesh OK.

After the solver convergence, I find that the fluid would not go from one block into the other one.
I think the problem is the internal face between the two blocks. OpenFOAM has problems with internal face, do you have any idea on this issue?

avila.vc March 19, 2016 15:02

Hi, if you still havent solved it, could you post a picture of your mesh indicating where the boundaries are on it? and the boundary definition list (polymesh/boundary)

wayne14 March 19, 2016 18:24

Quote:

Originally Posted by avila.vc (Post 590614)
Hi, if you still havent solved it, could you post a picture of your mesh indicating where the boundaries are on it? and the boundary definition list (polymesh/boundary)

Hi,

Thank you very much. The problem is solved:D

Yan


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