Gas dissipate for Pyro ?

[essencevfx]

Hey all, I'm creating some FX with new Pyro solver, and wondering where I might plug in a gasdissipate dop to have my smoke or denstity field dissipate over time .

Thanks for any insight !

J.

[ranxerox]

it is interesting that there isn't a dissipation tab on the pyrosolver (as there is a diffusion tab). You could create a sink that is a box the same size as your fluid box, then use a isooffset(fog volume), followed by a volumemix(set to User, with value expression $V*ch("../rate")), followed by a volumevop to customize where the dissipation occurs (I set up a simple scene using noise to make the dissipation uneven).

Of course you could also go into the pyrosolver and put in a gasdissipate dop as you said, but I don't have the answer to that question so I provide an alternative

will be interesting to hear other responses.

-ranxx

Hey all, I'm creating some FX with new Pyro solver, and wondering where I might plug in a gasdissipate dop to have my smoke or denstity field dissipate over time .

Thanks for any insight !

J.

[essencevfx]

gas dissipate dop seems to work. I mapped my density to temp source field , seems to work well for fast burning fire, well, so far anyways

[JColdrick]

Yeah Gas Dissipate came along very near the end of the beta cycle for 10 so I guess they didn't get the chance to make a shelf tool. Easy enough to make, but yeah, it's such a common request it would be handy. I guess you already figured it out, but you attach it to the Pyro Advection input and you're off...

Cheers,

J.C.