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[snappyHexMesh] surfaceCheck detects all faces as problem faces

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Old   April 18, 2018, 03:51
Default surfaceCheck detects all faces as problem faces
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Sebastian Vetter
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Hello all,

I am trying to create a mesh using snappyHexMesh but I'm not really satisfied with the results. Therefore I used the surfaceCheck function to check the stl files I am using. And there are indeed problems with them because it says "surface is not closed because not all edges are connected to two faces". When I visualize the problemFaces in paraview with surfaceSubset function I get my original geometry. So it looks like the whole geometry has a flaw but I don't know why.

Did anyone have the same problem at some time and some help for me?

Greetings,
Sebastian
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Old   April 18, 2018, 04:48
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Anton Kidess
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Make a new, proper STL or try fixing it with the surfaceHookup utility.
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Old   April 18, 2018, 06:40
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Sebastian Vetter
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Thanks for your answer!

But what makes a proper Stl file? I exported it in relatively high resolution from ptc creo, parted it with blender in different parts like inlet, outlet etc. And further refined the stl mesh. What could I have done so that its not a proper stl file?
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Old   May 6, 2019, 02:32
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I'm having a similar problem to Seb.

All my geometry is connected, I know this because I set it up that way in Fusion 360. When I run surfaceCheck it says its not all connected, yet the simulation works ok?
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Old   August 23, 2020, 10:43
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Hi, I think you can try 3D builder in the windows store. It's a 1 click repair which works for my case. Note that your output may be shifted after that, if it lies in the negative coordinates.
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