I encountered a problem as shown in the figure when using Openfoam and Calculus for coupling. This is output by the calculator terminal. I feel that there is a mismatch in the geometric dimensions, but I have checked the inp file size and there is no problem. I don’t know how to solve this problem. I am seeking everyone’s help. Thank you!
I am using preCICE3.0, openfoamV2112，calculix2.20；
elastic-obstacle-inflow.zip (343.3 KB)
This is my case file
A rigorous way to debug this is to do what preCICE is suggesting you there: turn on the visualization output in the preCICE configuration file and do a visual check if a significant geometric mismatch exists in the meshes of the participants you are coupling. Visualization files can be exported by the following options: Export configuration | preCICE - The Coupling Library
If the meshes are geometrically correct, please try the the options that the error message suggests further.
Thank you for your guidance. At the beginning of my case, the coupling was terminated due to this issue. Even if I added the command to output the structure grid in the preCICE configuration file, it could not be generated because the structure did not start the first iteration calculation. Is there any other way to check the grid?
What is the use of the precompice-forming/Solid-0-1. json file generated in the structure during computation? Can I view it?
Hi @cj1823149636,
the files you see are related to the performance analysis: Performance analysis | preCICE - The Coupling Library
You can generally see what the output files are in this page: Output files | preCICE - The Coupling Library (needs some updates, I took a note).
Now to the actual problem: I also guess that the reason you get this problem is probably a geometric mismatch. Since you cannot export the meshes at that point (indeed not convenient), you could try temporarily switching to a nearest-neighbor mapping, just for the exporting, so that you can verify whether the two meshes are matching. Then, switch back to RBF.
If you are only interested in the export files of preCICE and your current mapping configuration crashes, you can also alter the mapping configuration, e.g., to nearest-neighbor, which will not encounter the error and thus, preCICE can generate the exports.
