[CAD formats] STL preparation Siemens NX

LucDirven · September 27, 2016, 00:00

Hi guys,

I was wondering if any of you has experience with extracting an .stl file from NX and use it for snappy. I managed to extract the stl and apply snappy to it, but I cannot assign patches to all the surfaces, since it has only one surface.

The options I already found are:

1. Create seperate .stl files for all the surfaces.

2. Match the surfaces with those of the blockMesh and assign the patches in the blockMeshDict.

Is there another, more 'elegant' way to do this? Since option 2 does not work for complex geometries.

me3840 · September 30, 2016, 00:20

If you name the surfaces in NX and export them as an STL do they get exported with names?

LucDirven · September 30, 2016, 00:32

I made associative copies of each surface and I named them, but the name is not exported with the .stl file.

I finally wrote a small python script which combines the separate .stl files and names them

September 27, 2016, 00:00	STL preparation Siemens NX	#1
LucDirven New Member Foreign (non-US/Canada) Join Date: Sep 2016 Posts: 3 Rep Power: 9	Hi guys, I was wondering if any of you has experience with extracting an .stl file from NX and use it for snappy. I managed to extract the stl and apply snappy to it, but I cannot assign patches to all the surfaces, since it has only one surface. The options I already found are: 1. Create seperate .stl files for all the surfaces. 2. Match the surfaces with those of the blockMesh and assign the patches in the blockMeshDict. Is there another, more 'elegant' way to do this? Since option 2 does not work for complex geometries.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[snappyHexMesh] What CAD software do you use to define STL surfaces?	Awak	OpenFOAM Meshing & Mesh Conversion	11	November 12, 2020 11:00
[CAD formats] Creating waterproof STL using snappyHexMesh or salome	Tobi	OpenFOAM Meshing & Mesh Conversion	58	May 13, 2020 06:01
[ICEM] STL file! How is it useful?	bidi	ANSYS Meshing & Geometry	0	December 26, 2016 21:33
[ICEM] Work with imported STL geometry	KateEisenhower	ANSYS Meshing & Geometry	2	July 9, 2015 10:46
[snappyHexMesh] Experimentally obtained STL file for internal Flow SnappyHexMesh	Irish09	OpenFOAM Meshing & Mesh Conversion	9	April 7, 2012 08:50

September 30, 2016, 00:20		#2
me3840 Senior Member Join Date: Nov 2010 Location: USA Posts: 1,232 Rep Power: 24	If you name the surfaces in NX and export them as an STL do they get exported with names?

September 30, 2016, 00:32		#3
LucDirven New Member Foreign (non-US/Canada) Join Date: Sep 2016 Posts: 3 Rep Power: 9	I made associative copies of each surface and I named them, but the name is not exported with the .stl file. I finally wrote a small python script which combines the separate .stl files and names them