gmshToFoam unit conversion

billynoe · February 9, 2011, 15:00

Anybody know how to convert a gmsh model in inches to meters for OpenFoam

hardykalyan · February 9, 2011, 17:46

Use the following command in the .geo file and give a try

Mesh.ScalingFactor=0.0254;

billynoe · February 10, 2011, 00:39

No luck with that. I got an error when I opened the .geo in gmsh. I also tried putting it in the .msh file but gmshToFoam didn't like that either. Does it have to be in a specific location?

MartinB · February 10, 2011, 03:33

Hi William,

you might try the transformPoints utility:
Convert your mesh to OpenFOAM. Than call

Code:

transformPoints -scale "(0.0254 0.0254 0.0254)"

Martin

hardykalyan · February 10, 2011, 12:18

Quote:

Originally Posted by billynoe

No luck with that. I got an error when I opened the .geo in gmsh. I also tried putting it in the .msh file but gmshToFoam didn't like that either. Does it have to be in a specific location?

I don't have any problems if i add it in my .geo file. Try adding it to the first line of your .geo file code and then remesh and save the mesh.

You will find the converted mesh. But the .geo file doesn't change its coordinates.

You can also try what Mr.Martin said. Even that works well

billynoe · February 10, 2011, 14:05

Thanks Guys both methods worked.

February 9, 2011, 15:00	gmshToFoam unit conversion	#1
billynoe Member William Join Date: Feb 2011 Location: Minnesota USA Posts: 33 Rep Power: 15	Anybody know how to convert a gmsh model in inches to meters for OpenFoam

February 10, 2011, 03:33		#4
MartinB Senior Member Martin Join Date: Oct 2009 Location: Aachen, Germany Posts: 255 Rep Power: 21	Hi William, you might try the transformPoints utility: Convert your mesh to OpenFOAM. Than call Code: transformPoints -scale "(0.0254 0.0254 0.0254)" Martin chandra shekhar pant likes this.

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February 9, 2011, 17:46		#2
hardykalyan New Member kalyan Join Date: Oct 2010 Posts: 19 Rep Power: 15	Use the following command in the .geo file and give a try Mesh.ScalingFactor=0.0254;

February 10, 2011, 00:39		#3
billynoe Member William Join Date: Feb 2011 Location: Minnesota USA Posts: 33 Rep Power: 15	No luck with that. I got an error when I opened the .geo in gmsh. I also tried putting it in the .msh file but gmshToFoam didn't like that either. Does it have to be in a specific location?

February 10, 2011, 14:05		#6
billynoe Member William Join Date: Feb 2011 Location: Minnesota USA Posts: 33 Rep Power: 15	Thanks Guys both methods worked.