Hello Folks,

I am trying to figure out why my smoke is not colliding with my object. I have attached HIP file.


This is what i understand (please correct me if i am wrong)
In my setup file i have tons of gas released this is creating tons of divergence which is totally expected but it seems like its not caring much about collision. If i look at divergence field it creates divergence where my collision exits. I thought it would take that in account but its not …

I really don't know what i am missing here.
Couple of things i tried so far. RBD Static Object, VDB Collision, Adding collisionvel (in my case just i just used N as V), tried changing bunch of parm in pyrosolver such as correct collision and adding substeps and all but nothing helps.

I think i am missing something simple to fix this.
Any help would be appreciated.

this is caused by heat field slowly expanding into collision object and since divergence and combustion density are dependent on heat field, they will follow

you could correct density by changing Combustion/Smoke/Source to Burn, however that would still leave the heat (flames) and divergence penetrating your collision object

so better way is to remove heat from collisions by Gas Enforce Boundary DOP
see the file

That solves all the problem. ..

Thanks Tomas.

tamte
this is caused by heat field slowly expanding into collision object and since divergence and combustion density are dependent on heat field, they will follow

you could correct density by changing Combustion/Smoke/Source to Burn, however that would still leave the heat (flames) and divergence penetrating your collision object

so better way is to remove heat from collisions by Gas Enforce Boundary DOP
see the file