Minimal deformation in the event of 100kg tnt explosion

Using preCICE
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1

Hello my name is Enrique,

I have been trying for a long time to successfully couple Blastfoam (a compressible gas solver based on OpenFOAM) with CalculiX to study the deformation of a building in the event of a 100 kg TNT explosion. I have managed to run the coupled simulation successfully without errors, but I don’t understand why the building’s deformation is almost negligible (on the order of 10^-4 m), which is impossible. I also noticed that the velocity UUU is very low, around 2/20 when it should be in the order of hundreds or a few thousand. I am completely lost and I am in a hurry. Any help would be greatly appreciated.

I added all the folder and the precice configuration.

Thank you in advance.

preciceDict.txt (491 Bytes)

BuildingForce.zip (154.8 KB)

precice-config.xml (2.0 KB)

2

Hi @Checa,

could you please add the screen log of the solver?

Blastfoam is probably using a modified version of the adapter, and I guess is based on OpenFOAM 9. OpenFOAM 9 is currently not supported, but we plan to support it again. See the compatibility notes:

With that said, I assume that something is incomplete in the FSI/Force.C file. If you add the forces function object, and you enable exports in preCICE, do you get similar force values?