[zhongsheng]

Hell guys,
I want to use snappyMesh to generate meshs from a .stl file. However, I got an error after I run surfaceFeatureExtract.
I had changed name of stl file and surfaceFeatureExtractDict, but it didn't work.

And my foam version is OF-v2112. The format of .stl file is ASCII.

Error message:

Create time


Note: Feature line extraction only valid on closed manifold surfaces

Reading surfaceFeatureExtractDict



--> FOAM FATAL ERROR: (openfoam-2112)
No surfaces specified/found for entry: clyn.stl

    From int main(int, char**)
    in file surfaceFeatureExtract.C at line 308.

FOAM exiting

constant directory:

constant
├── dynamicMeshDict
├── polyMesh
│** ├── boundary
│** ├── faces
│** ├── neighbour
│** ├── owner
│** └── points
├── thermophysicalProperties
├── transportProperties
├── triSurface
│** └── cyln.stl
└── turbulenceProperties

surfaceFeatureExtractDict:

clyn.stl
{
    
    extractionMethod    extractFromSurface;

    includedAngle       120;

    geometricTestOnly   yes;

    intersectionMethod  region;

    tolerance           1e-5;

    writeObj            yes;
}

I upload my case file in attachments.

Wish for your help,
Zhong.

[zhongsheng]

It seems that I write a 'clyn' but not a 'cyln' in surfaceFeatureExtractDict. I checked many times and didn't find it.

[Hr_kules]

Hi, i looked into your case and the snippet of the stl doesn't start with the usual "solid" entry that an stl file has. Maybe this produces the error?