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Masoud

POP Fluid collision and thickness issue...

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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

POPFluid.jpg

Edited by Masoud

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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

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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 by Masoud

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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 ?

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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. 

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Ok, so I increased sub-steps to 5.

Thanks.

Edited by Masoud

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