CFD Online Discussion Forums - [snappyHexMesh] Prolem with surfaceFeatureExtract

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:

Code:

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:

Code:

constant

├── dynamicMeshDict

├── polyMesh

│** ├── boundary

│** ├── faces

│** ├── neighbour

│** ├── owner

│** └── points

├── thermophysicalProperties

├── transportProperties

├── triSurface

│** └── cyln.stl

└── turbulenceProperties

surfaceFeatureExtractDict:

Code:

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.