06-14-2015, 08:04 PM
hi,
when simulating only smoke under rotational forces (i.e. setting Advection to "fields"), smoke gets dissipated dramatically for no clear reason. usually, the simulation starts nicely and after couple hundreds frames (e.g. 400 frames) smoke gets dissipated very quickly and underlying smoke emitters appear in the scene! This behaviour makes FumeFX unusable ...
My question: how to stop this behavior from happening, is it a bug in FumeFX, was fumeFX tested with forces for longer simulation, is there any workaround? I've tried the following without success:
1-increased solver quality to 10
2-increased maximum iterations to 900
3-tried different values from CFL, ranging from 2 to 5
4-set maximum simulation step to 3 (did not try higher bc I am using high grid resolution and 3 steps were enough to satisfy CFL condition)
5-used cubic interpolation
6-lowered Advection stride to 0.001
7-set vorticity to 0.2
8-set dissipation min dens to 0.0001 (and sometimes to 0.0)
9-set dissipation strength to 0.01 (and sometimes to 0.0 to eliminate dissipation altogether)
however, none of the above solves the problem! smoke always gets dramatically dissipated and I see underlying emitters.
As mentioned previously this problem is a show stopper and renders FumeFX unusable.
Any feedback is highly appreciated...
when simulating only smoke under rotational forces (i.e. setting Advection to "fields"), smoke gets dissipated dramatically for no clear reason. usually, the simulation starts nicely and after couple hundreds frames (e.g. 400 frames) smoke gets dissipated very quickly and underlying smoke emitters appear in the scene! This behaviour makes FumeFX unusable ...
My question: how to stop this behavior from happening, is it a bug in FumeFX, was fumeFX tested with forces for longer simulation, is there any workaround? I've tried the following without success:
1-increased solver quality to 10
2-increased maximum iterations to 900
3-tried different values from CFL, ranging from 2 to 5
4-set maximum simulation step to 3 (did not try higher bc I am using high grid resolution and 3 steps were enough to satisfy CFL condition)
5-used cubic interpolation
6-lowered Advection stride to 0.001
7-set vorticity to 0.2
8-set dissipation min dens to 0.0001 (and sometimes to 0.0)
9-set dissipation strength to 0.01 (and sometimes to 0.0 to eliminate dissipation altogether)
however, none of the above solves the problem! smoke always gets dramatically dissipated and I see underlying emitters.
As mentioned previously this problem is a show stopper and renders FumeFX unusable.
Any feedback is highly appreciated...
