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Mapping of physical coordinates and field data |
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March 27, 2017, 11:29 |
Mapping of physical coordinates and field data
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Hello CFD users,
I would like to get information about the velocity field in a specific area of a computation domain (not the whole domain) at runtime. How can I do this? I am using a polar (2D) grid with physical coordinates. I found out that the ordering of the output form of the U,p,etc files for a polar grid is in the form (while assuming i -> r in the range say [0,N] j -> phi in the range say [0,M] ) Data[i=0,j=0 to M] with Data a matrix with M lines and three rows Data[i=1,j=0 to M] ... Data[i=N,j=0 to M] I can handle this in the post processing and for a spherical symmetry, but, I know that at runtime, it should be possible to specify a specific area of the mesh by a patch name and use this data. Unfortunately I figured out that this approach is not working for my goals. I am in addition not interested in the x and y component of the flow, I would like the measure the phi velocity at runtime only.) So how can I get the physical information (say velocity) by means of any other mapping (like a probe of openFOAMs post processing tools) for a big bunch of cells out of the domain? Many thanks to you, who are more skilled than me. |
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