Sure, since I didn’t know how to attach files I made a pastebin for the UDF https://pastebin.com/4gbPyeRZ (in this version of the UDF I reduced the velocity again because I got the “Update-Dynamic-Mesh failed. Negative cell volume detected” error too often and I read the reason for this is when the mesh moves more than 50% of the size of the adjacent cell per time step)
Now a few screenshots, I hope everything you need is there:
The first 3 pics are from the settings, then 2 pics from the mesh before and after the expansion and behind the link are 2 pics from the real world experiment. What is not clearly visible is that there are 4 bodies (or I think zones is more correct here), not 3. The real world fire-resistant glass consists of a 2.6mm glass pane 1.4mm intumescent interlayer and another 2.6mm glass pane (total 6.6mm). Afterwards the total height is a little more than 20mm so the intumescent expanded about 14mm.
Chemical composure and material properties are unkown (to us). At the moment we split the 1.4mm layer in 2 parts, one is 1.3mm thick with the material properties we experimentaly determined at room temperature and the second is 0.1mm thick and this is the one that actually expands with the dynamic mesh. (I don’t want to go too much into detail here but there are ofc. several mass source UDFs for the mass that emerges/disappears in one or the other region and for the H2O-vapor that gets created and disappears through the outlets.)
I hope I provided enough information, thank you,
Christian
You are navigating away from the AIS Discovery experience