90okm Posted October 9, 2018 Share Posted October 9, 2018 Hi ! I'm not a kind of novice in houdini but i still can not get an answer please take a look at the picture here is the result of simulation. As you can see there are areas where smoke looks like stretched through several adjacent voxels Why do these stripes appear ? is it due to insufficient substeps or somewhat else ? in this case i set 16 substeps and rather high container resolution ! on the other hand i have high initial velocity stamped from points. i've tried to use adaptive substepping but it had no prominent effect. i think if i had risen substeps amount to 100 or more i would probably get rid of this stripes....but i would not like to simulate it for ages.... maybe some of you has found an easy way to deal with such issues.... Quote Link to comment Share on other sites More sharing options...
benne5 Posted October 9, 2018 Share Posted October 9, 2018 There are many things that can help. You can start by increasing the resolution of your your smoke/pyro object. You can add noise to the fluid source or directly to the sim to break it up. You can also increase the CFL condition on the pyro solver. Whatever geo node you are bringing the data out of DOPs to, you can increase the volume filter width and change volume filter type from box to Gaussian. Quote Link to comment Share on other sites More sharing options...
90okm Posted October 9, 2018 Author Share Posted October 9, 2018 thanks, benne5 ! it has helped a bit i think i've got all these stuff because of my additional disturbance, that messed velocity field too much ! so i had to raise substep amount to mantain proper density moving. Quote Link to comment Share on other sites More sharing options...
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