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gas calculate vs dissipate

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Posted (edited)

Hello everybody,

I work on Houdini indie 18 and I am facing a weird issue on my smokesolver sim.

I have a basic sphere emiting smoke.

micro solvers :
-I create a new velocity2 field 

-than a volumevop. I bind import my new velocity2 field to affect the smoke vel with a turbulence(multiply) -> bind export
-add a gas calculate

My smoke sim now dissipate while playing.

why? Is there a link between the gas calculate and dissipation ?

thank you 


with gas calculate you can notice some dissipation in the density



without gas calculate (no noise on density) no dissipation




Edited by JayBBK

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