Masoud Posted March 31, 2020 Share Posted March 31, 2020 (edited) Hi; I tried to use "POP Fluid" in my fluid simulation, but there are some issues: 1) The particles are shrinking to zero volume thickness. 2) They pass through the sidewall of the container when I animate its rotation! Thanks for helping. POP_Fluid_01.hip Edited March 31, 2020 by Masoud Quote Link to comment Share on other sites More sharing options...
doc Posted April 2, 2020 Share Posted April 2, 2020 upping the max substeps on the solver to 3 seems to fix the leaking issue. Don't know off the top of my head how to fix the shrinking issue. I'm guessing the popfulid node is more appropriate for thin fluid sims, probably better off using a full blown flip sim POP_Fluid_02.hip POP_Fluid_02.hip Quote Link to comment Share on other sites More sharing options...
Masoud Posted April 5, 2020 Author Share Posted April 5, 2020 (edited) On 4/2/2020 at 10:42 AM, doc said: upping the max substeps on the solver to 3 seems to fix the leaking issue. Don't know off the top of my head how to fix the shrinking issue. I'm guessing the popfulid node is more appropriate for thin fluid sims, probably better off using a full blown flip sim POP_Fluid_02.hip POP_Fluid_02.hip Hi "el Doktor"; Increasing substep increases simulation time too. Is there any better solution? Edited April 5, 2020 by Masoud Quote Link to comment Share on other sites More sharing options...
DonRomano Posted April 5, 2020 Share Posted April 5, 2020 Sometimes higher sim times are required to get accurate collisions. Substeps helps interpolate you animation to calculte more precisely the collision frame byr frame. What are the settings on your collider ? Quote Link to comment Share on other sites More sharing options...
doc Posted April 5, 2020 Share Posted April 5, 2020 What Don said. The reason why it falls through is because you particles move to the other side of your collision object in a single frame. As a cheat you can try making you collision object thicker. Quote Link to comment Share on other sites More sharing options...
Masoud Posted April 6, 2020 Author Share Posted April 6, 2020 (edited) Ok, so I increased sub-steps to 5. Thanks. Edited April 6, 2020 by Masoud Quote Link to comment Share on other sites More sharing options...
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