[quarkz]

Hi,

I'm learning how to run the propeller tutorial. It works in the original setup. However, when I tried to change to my propeller, it fails at the snappyHexMesh stage.

Can anyone give hints as to what happen?

My propeller was created:
1 Solidworks and converted to parasolid
2.imported into Ansys workbench to mesh, export as cgns
3. imported into Pointwise and export as stl
4. use surfaceFeatureConvert.exe to convert to obj

I realise that the provided propeller seems hollow. I tried to re-create similar propeller but I got the same error:



--> FOAM FATAL ERROR:
Unknown region name ascii for surface propellerTip
Valid region names are 1(patch0)

From function Foam::searchableSurfaces::searchableSurfaces(const Foam::IOobject&, const Foam::dictionary&, bool)
in file searchableSurfaces/searchableSurfaces/searchableSurfaces.C at line 258.

Please help, thanks!

[Simone81]

Hi,

I am having the same problem! did you find any solution?

Thank you very much!

Simone

[Antimony]

Hi,

There is a name mismatch between what has been specified in snappyHexMeshDict and what is actually there in the STL file...

Cheers,
Antimony

[quarkz]

Hi,

I tried to replace the propellertip.obj with another similar sized propeller in stl format and it seems to work. Hoever, I'm now facing skewness check fail problem...

[gabrielfelix]

Hi,

I solved the problem. I changed "g MeshGeom" to "g ascii" at the transition from "v" lines to "f" lines, and snappyHexMesh ran succesfully. In the case of @quarks there is "patch0" instead of "MeshGeom".

v -0.0003690902661            -0.35  0.0008275875083
v  -0.000593279069            -0.35   0.001431411114
v -0.0006829590175            -0.35   0.001788135254
g MeshGeom
f 1 2 3
f 2 4 3
f 2 5 4

to

v -0.0003690902661            -0.35  0.0008275875083
v  -0.000593279069            -0.35   0.001431411114
v -0.0006829590175            -0.35   0.001788135254
g ascii
f 1 2 3
f 2 4 3
f 2 5 4