How to kill smoke outside the boundary box?

[yjcnbnbnb200]

The default setting of pyro fluid container is that when the fluid hit the boundary of container box, it collided with the boundary then bounce, now I want to make it seems totally ignore the boundary and disappear outside the pyro boundary box, how to make it, many thanks.

[SpencerL]

On the smoke object > Initial Data tab, check closed boundaries and uncheck all the axis that apply

[yjcnbnbnb200]

Thanks, and another if I want to define an area that when the smoke come into that area, it disappeared, how to make it? Someone tell my use volume to make a 0 denityrea then use gas calculate. But  i do not know how to achieve that.

[anibrain]

one way - you can create a sdf volume, and use it inside dop as a SINK source. you can also use shelf tool to do the same (.../populate container > Sink from).

sink_smoke.hipnc

Edited January 22, 2014 by anibrain

[yjcnbnbnb200]

thank you very much, but my final effect is something different, like void src in fumefx, the fluid disappear at once after hit the area of volume, the sink volume is something like a feature out from area.