[Netgen] Netgen - convertToMeters

mikeR · April 7, 2014, 04:43

I searched the openFoam wiki http://openfoamwiki.net/index.php/NetgenNeutralToFoam and also the nets but couldn't find an awnser:

How do I specify the conversion from pixels to meters in a mesh created with netgen?

cheers!

mikeR · April 14, 2014, 09:52

does anyone have information on this? I looked alot and found some ways to resize the mesh, but no information how one pixel scales to meters after converting a mesh

alexeym · April 14, 2014, 10:05

Hi,

I guess, you know sizes of the mesh in pixels. Convert mesh to OpenFOAM format, run checkMesh utility, it will show you dimensions of the mesh:

Code:

...
Checking geometry...
    Overall domain bounding box (x1 y1 z1) (x2 y2 z2)
...

Now you can calculate scaling coefficients.

mikeR · April 14, 2014, 10:35

thank you. I assume the output of the checkMesh utility is in meter?

alexeym · April 14, 2014, 10:37

Yes, it's in meters.

April 7, 2014, 04:43	Netgen - convertToMeters	#1
mikeR New Member anonymous Join Date: Apr 2014 Posts: 8 Rep Power: 12	I searched the openFoam wiki http://openfoamwiki.net/index.php/NetgenNeutralToFoam and also the nets but couldn't find an awnser: How do I specify the conversion from pixels to meters in a mesh created with netgen? cheers!

April 14, 2014, 10:05		#3
alexeym Senior Member Alexey Matveichev Join Date: Aug 2011 Location: Nancy, France Posts: 1,930 Rep Power: 38	Hi, I guess, you know sizes of the mesh in pixels. Convert mesh to OpenFOAM format, run checkMesh utility, it will show you dimensions of the mesh: Code: ... Checking geometry... Overall domain bounding box (x1 y1 z1) (x2 y2 z2) ... Now you can calculate scaling coefficients.

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April 14, 2014, 09:52		#2
mikeR New Member anonymous Join Date: Apr 2014 Posts: 8 Rep Power: 12	does anyone have information on this? I looked alot and found some ways to resize the mesh, but no information how one pixel scales to meters after converting a mesh

April 14, 2014, 10:35		#4
mikeR New Member anonymous Join Date: Apr 2014 Posts: 8 Rep Power: 12	thank you. I assume the output of the checkMesh utility is in meter?

April 14, 2014, 10:37		#5
alexeym Senior Member Alexey Matveichev Join Date: Aug 2011 Location: Nancy, France Posts: 1,930 Rep Power: 38	Yes, it's in meters.