Diverging timestep due to turbulence residuals

kjetilbmoe
Fri, 12 Nov 2021 14:32:15 +0000

Even after simplifying the geometry and putting quite some effort into a good mesh, the divergence knocks in at about the same time, around 0.5s, and starting to complain about negative gas density.

Another strange thing is that the outlet monitor reports significant amount of particles being pulled out the top, even from the start. This shouldn’t be possible. This goes for all phases. The air phase remains constant up to 0.5s, but the solid phases cross over to the negative side. I have not seen this happen in the 2D simulations, which otherwise are very similar.