Hi everyone,

Can someone tell me, whether it is possible to control the dissipation of smoke based on the bounding box height?..


thanks

yes!

You can use a gas field vop for that.

In there you can use the bbox position, map the y over a ramp and multiply the result with density. The problem that you run in to is resizable fluid containers, if you have that enabled. In that case the 0-1 values change over time, because the box grows or shrinks.

It would therefore be easier to map the voxel position P(y) to a 0 - 1 value (using fit) (for example 0-10), put that result through a ramp and multiply that with density.

The gas field vop can be plugged in to the advection or post solve input of any solver. The gas_dissipate microsolver might be a good example!

Hope that helps

thanks cklosters for your help, I made a setup with your suggestion, it seems to be working

but I want u to take a look into my file. I am using the min and max y value of my pyro container as the fitrange source min and max.

hope I am doing it right…


thanks