Hi all ,
I have a problem when I render smoke volume, certain parts appear lines as if the voxel were visible.
The resolution is high, but it happens to me in some areas, it is rendered with Redshift, but the same thing happens with mantra.
Any idea why it happens?

Thanks a lot

This is most commonly caused by Turbulence or Disturbance fields. Try to play around with their power a little, maybe pulse length and block size can help you.

Another way to get rid of them is to go to the Advanced Tab in your PyroSolver, under the advection tab you can set the Advection Scheme to BFECC.

Hopefully they'll fix your issues. Worked on my scenes a couple of times.

Hello, I'm going to try what you have told me, it is giving me a lot of headaches, I also see that when I increase the amount of density a lot, the defect is more visible.

Thank you very much, I will tell you

I have been playing with both with disturbance and turbulance, block size and Threshold Range and it is much better.

thank you very much for your help

Great news! Glad I could help.

Also don't forget about the BFECC, in some cases it helps tremendously.