|September 20, 2013, 16:53||
mesh spatial dimension in OpenFOAM
Join Date: Sep 2012
Posts: 27Rep Power: 6
My default mesh geometry length is in 80 mm. For OpenFoam, I scaled the mesh in meters as 0.008 m. Once I import the mesh in OpenFOAM, it is a collection of point coordinates. Now, the location of these points and spatial difference between different points will be the same either if they are in mm or m. I feel spatial unit is arbitrary here?
I want to understand when do I have to scale the geometry in Openfoam and when not?
Last edited by jr33; October 2, 2013 at 01:01.
|September 29, 2013, 03:25||
Join Date: Sep 2009
Location: Tehran, Iran
Blog Entries: 1Rep Power: 16
then you will see the scale of your geometry, if it differs from what you intended then you can use transformPoints -scale '(x x x)'
where x is your scale.
|May 23, 2016, 11:57||
Join Date: Oct 2015
Posts: 33Rep Power: 2
I have a question regarding the fluentMeshToFoam command. My geometry is in mm and I've created the mesh in ICEM. Now after doing fluentMeshToFoam pipe.msh I do checkMesh. Now, checkMesh gives the dimensions of the overall bounding box without the units. Are these units in mm since my geometry is in mm? or if I want to convert it into mm should I do transformPoints -scale '(0.001 0.001 0.00)'?
For example, when I go to the scale option in fluent, it asks me the units in which my mesh was created and accordingly scales the mesh. What I mean by scale is, it keeps the numbers the same just changes the units. In openFOAM, when I do checkMesh, it gives me the same dimensions without the units. So I don't know what the units are., whether it is m or mm.
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