Im hesitant to think it is a mesh problem specifically, because everytime I run the decomp -> simulation it can produce a different result; single wart but in a different location or an internal wart. So decomp is changing the wart location. My main concern is that im using interCondensatingEvaporaringFoam incorrectly, by causing evaporation in a closed tube (no slip at walls and zero pressure gradient everywhere); in your experience is this possible in ICEF? I was thinking maybe because ICEF treats the fluids as incompressible with constant rho, but I am creating more gas by evaporation and not allowing mass transfer out of the boundary that maybe the solver is confusing itself