Post-Processing -> Interpolation of cell-centered values to vertex
Hi,
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. |
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:
http://aaac.larc.nasa.gov/tsab/cfdla...ssertation.pdf Page 17 formula 3.10 Hope this will help. Do |
Quote:
http://www.tecplottalk.com/ |
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