| a19910112a |
May 14, 2015 09:56 |
topoSet Wrong number of faces.
2 Attachment(s)
Hi Foamers. I came across the same problem as describeded in http://www.cfd-online.com/Forums/openfoam-meshing-blockmesh/128416-problems-holes-gaps-baffle-internal-wall-zero-thickness.html.
I did the same thing as described in the referred post.
To solve this problem, I located the problem at topoSet. It recognise a wrong number of faces.
My blockMeshDict is as :
Code:
convertToMeters 1;
vertices
(
(0 0 0 ) // 0
(2.4424 0 0.1065158) // 1
(2.4424 0 -0.1065158) // 2
(0 1 0 ) // 3
(2.4424 1 0.1065158) // 4
(2.4424 1 -0.1065158) // 5
(4.25 0 0.1853472) // 6
(4.25 0 -0.1853472) // 7
(4.25 1 0.1853472) // 8
(4.25 1 -0.1853472) // 9
);
//local axes (z x y)
blocks
(
hex (1 2 0 0 4 5 3 3 ) innerCore (1 26 10) simpleGrading (1 1 1)
hex (6 7 2 1 8 9 5 4 ) radialReflector (1 18 10) simpleGrading (1 1 1)
);
edges
(
);
...
This generate a mesh of a wedge which is shown in the first attached pic. There are 10 meshes in the y direction.
I want to add a baffle wall in the middle of the wedge, which is shown in the second attachment.
The toposet file :
Code:
actions
(
{
name baffle;
type faceSet;
action new;
source boxToFace;
sourceInfo
box (2.4424 0 -0.107) (2.4424 1 0.107); //24
}
}
{
name baffle;
type faceZoneSet;
action new;
sourceInfo
source setToFaceZone;
{
faceSet baffle;
}
}
);
the log it generates:
Code:
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time
Create polyMesh fluid for time = 0
Reading topoSetDict
Time = 0
mesh not changed.
Created faceSet baffle
Applying source boxToFace
Adding faces with centre within boxes 1((2.4424 0 -0.107) (2.4424 1 0.107))
faceSet baffle now size 9
Created faceZoneSet baffle
Applying source setToFaceZone
Adding all faces from faceSet baffle ...
faceZoneSet baffle now size 9
End
As can be seen, topoSet recognises only 9 faces where 10 are expected, which gives the baffle shown in the second pic.
Can anyone tell me where the problem could be and how can I solve it ?
By the way, I also tried to use points 42, 15, 51, as the two points after the box item in topoSet. In those cases only 0 face could be recognised. This seems to be due to some similar or related reasons.
Thanks |
