|June 26, 2010, 14:02||
Post-Processing -> Interpolation of cell-centered values to vertex
Join Date: May 2009
Posts: 24Rep Power: 8
I am using Tecplot as a post-processor to visualize CFD-solutions which are stored within an _unstructured CGNS_ (cell-centered). Loading the CGNS-file into Tecplot, I noticed that contour-plots of (all) quantities like mach-number etc. are not smooth. (The simulation converged very nicely. Therefore, I believe that it is only a visualization-problem).
1. Could this be a Tecplot-interpolation-problem? Are there fixes available??
2. I thought that the problem might be the data-storage within the CGNS. Maybe the contours become smooth if I transfered the data from the nodes (=cell centeres) to the vertexes???
Has anybody experience with this issue??? Are there free tools available to interpolate the solution from the nodes to the vertexes???
Thanks in advance.
|June 26, 2010, 16:09||
Join Date: Nov 2009
Posts: 411Rep Power: 11
There is a simple methodology to interpolate the data from the cells adjacent to one node: use the inverse of the distances as weights. You can search for the articles of Neal T Frink:
Page 17 formula 3.10
Hope this will help.
|June 26, 2010, 23:54||
Join Date: Mar 2009
Blog Entries: 6Rep Power: 9
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