# (x,y,z) of cell center

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 January 23, 2012, 15:11 (x,y,z) of cell center #1 Member   ak Join Date: May 2011 Posts: 71 Rep Power: 6 Hello, Does anyone know how we can get (x,y,z) of cell centers in the mesh? I want to access cells whose center's x coordinate lies 10mm either side of xo = 0.05 Thank you, amit

 January 23, 2012, 17:22 #2 Member   ak Join Date: May 2011 Posts: 71 Rep Power: 6 i think i got it mesh.C[celli].component(0) should work... (for x location)

 January 23, 2012, 17:40 #3 Senior Member   Niels Gjoel Jacobsen Join Date: Mar 2009 Location: Deltares, Delft, The Netherlands Posts: 1,609 Rep Power: 25 Yes that is true, however, if this limit is static throughout the simulation, then you should consider cellSets combined with setsToZones. This will give you access to a cellZone inside the simulation, where the cells, which fulfill your spatial requirement, are listed. In this way you do not have to recompile your solver in case you decide to change x0 or any other parameter. Kind regards, Niels

June 24, 2013, 15:37
#4
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Andrej
Join Date: Jun 2013
Posts: 6
Rep Power: 4
Quote:
 Originally Posted by ngj Yes that is true, however, if this limit is static throughout the simulation, then you should consider cellSets combined with setsToZones. This will give you access to a cellZone inside the simulation, where the cells, which fulfill your spatial requirement, are listed. In this way you do not have to recompile your solver in case you decide to change x0 or any other parameter. Kind regards, Niels
Hello,

does it mean, that I can control the center of cells during calculations? I want to experiment with algorithm for choosing cell centers to minimize the non-orthogonality effects.

I really need it, because i've constructed a mesh with triangle prisms, with acute triangles - so using Voronoy points as cell centers would solve problems with errors because of non-orthogonality.

Forcing OpenFOAM to use my custom cell centers in ALL calculations - is it possible?

regards,
Andrej

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