phoenix flickering problem

[uncel]

hey
i'm playing with phoenix for couple of days and i got big problem with rendering simulation, im trying to generate dense smoke from object which is moving, and when the new voxels are generated on surface, they simply flick, is there some easy way to get rid of it?

here's youtube link:

http://www.youtube.com/watch?v=PlQNn...ature=youtu.be

[Ivaylo Katev]

not sure what you mean, perhaps the interrupted track after the moving parts?

[uncel]

what do you mean by interrupted track?

here's link to uncopressed version
what i mean its most visable on the "guy" chest, it looks really noisy, and i'd like to have it quite clean,

hope it helps

https://www.dropbox.com/s/pi41f2tdwu5j2kh/01_1.mov

[Ivaylo Katev]

now i see, the smoke looks like a noise over the body. do yo have GI? this is the most common cause for flickering.

[uncel]

no GI, just one direct light with vray shadow on

[Ivaylo Katev]

no idea. how you create the smoke? i mean, is it a solid object, inject mode non solid or brush mode non solid?

[uncel]

here are all my settings:
https://www.dropbox.com/s/r0q69rymki...awienia_01.jpg

[Ivaylo Katev]

there is no visible reason for flickering, so i would bet for the displacement texture.
beside this, i would recommend to optimize the simulation settings. disable the temperature export, use simple smoke for the transparency, use uniform density simulation. and the most important - select you best settings in a small grid, and then move them into the bigger grid. i mean small by cell count, but with the same cell size in the same scene. if you change the cell size, you will obtain different results, due to the gravitation.
try to use symmetric conservation, in my opinion it is better for smoke sims.
and one more direction for experiments - fixed spf mode. this means, set the advection step to a big value, let say 50, and set equal value to both the upper and lower spf limits, start to experiment with 1. this may produce better and faster results compared to the default settings

[uncel]

thanks for replay and tips, ill continune experiments