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Scaling and SnappyHexMesh

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Old   July 15, 2013, 05:27
Default Scaling and SnappyHexMesh
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Aditya
Join Date: May 2013
Location: Munich Germany
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Hello

I am trying to do a blower simulation. I have a working simulation. But while checking throught the log files I found that I have "did not succesfully snap mesh. Giving up" statement at the end of snappyHexMesh. So I searched some thing and some one suggested that we have to scale the mesh to correct units before doing snappyHexMesh.
I did it.

Now the problem is when I scale the mesh before snappyHexMesh, Some of the patches which should have faces on them are shown as empty and are removed by "createPatch" utility.

I am confused what I am doing wrong. Do I also have to change the base mesh. ??

Here is the outline of the sequence of operations I perform before solving :

PHP Code:
1.surfaceFeatureExtract
2.BlockMesh
3.Decomposepar
4.transformPoint
(scaling)
5.snappyHexmesh
6.reconstructParMesh
7.toposet
8.decomposePar
9.MRFSimpleFoam 
(I am running a parallel simulation)

or is there any other reason for getting this "did not succesfully snap mesh. Giving up" problem...??

Thanks in advance
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