Quality

[Woody79]

Hopefully someone can help me

I have simed with a tight grid, and with quality at 1, and interations at 20, im getting nice swirls and good detail. Now when i turn up the quality to 4 and iterations to 100 for a final sim. The damn fluid doesnt budge in places, and acts completely differently to when it was on quality 1.

Am i doing something wrong? as im finding as i turn up the settings i need to go back and keep increasing the emittion velocity, and the density etc.

[cgroman]

welcome to the world of fume.

i dunno why u should increase density, but ur right concerning the velocity. the less iterations r used for sim, the more the fluid can continue to move straight, while many iterations will give u more detail through swirls, that also cause the fluid to slow down faster. its the same with vorticity: the higher the value, the more the fluid tends to be turbulent inside and this simply cost speed. it cant keep direction...

u have to keep that in mind, then u can work quite well with lower and higher res sims.

[Woody79]

cheers roman

hmm i guess that makes sense. The sim becomes more senstive with higher settings. I tihnk im going to stick to quality 1 for all my smoke only shots. its very whispy and light, so i doubt it will be an issue.

I have a hunch that that vorticity might be the culprite. Im animating it from 0 to 1, but quite quickly, maybe i should slow that down, and only bring it up nearer the end.

sweet. getting there slowly, learning by trial, tear hair out, ask questions, and lots of errors~!