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Maniphest T74108

mantaflow - liquid expands with forces
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Description

System Information
Operating system: Windows-7-6.1.7601-SP1 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 441.87

Blender Version
Broken: version: 2.82 (sub 7), branch: master, commit date: 2020-02-12 16:20, hash: rB77d23b0bd76f
Worked: afaik never

Short description of error
liquid expands or dilates over time when some forces are used..
(also liquid looses volume when colliding with deforming geometry)

Exact steps for others to reproduce the error
select defaut cube > object > quick effect> liquid
add turbulence crank the force up to something like 10
bake 250 frame
as here:

Event Timeline

kevin deguisne (iscream) created this task.Feb 22 2020, 11:40 AM
kevin deguisne (iscream) added a comment.Feb 22 2020, 11:54 AM

I was not able to reproduce the volume loose with animated geometry.... but it's bugged as well, expanding once again.

Germano Cavalcante (mano-wii) added a subscriber: Germano Cavalcante (mano-wii).Feb 24 2020, 2:15 PM

Could you provde a simple file showing the problem?

kevin deguisne (iscream) added a comment.Feb 24 2020, 2:57 PM

here

bugMantaflow.blend442 KBDownload

Richard Antalik (ISS) changed the task status from Needs Triage to Confirmed.Feb 24 2020, 5:20 PM
Richard Antalik (ISS) added a project: Nodes & Physics.
Steve Jones (squaregoldfish) added a subscriber: Steve Jones (squaregoldfish).Mar 7 2020, 7:31 PM
Jacques Lucke (JacquesLucke) added subscribers: Sebastián Barschkis (sebbas), Jacques Lucke (JacquesLucke).Mar 18 2020, 1:54 PM

@Sebastián Barschkis (sebbas) is this something you are aware of? Is this a bug that you plan to fix soon or is this a known issue for now?

Sebastián Barschkis (sebbas) changed the task status from Confirmed to Needs Information from User.Mar 18 2020, 3:54 PM

For now, the only solution to issues like these is to adjust the "Particle Radius". @kevin deguisne (iscream) In the .blend file that you attached, can you try simulating with a smaller "Particle Radius". A value of 0.65 seemed to work for me.

Philipp Oeser (lichtwerk) closed this task as Archived.Apr 3 2020, 5:53 PM
Philipp Oeser (lichtwerk) claimed this task.
Philipp Oeser (lichtwerk) added a subscriber: Philipp Oeser (lichtwerk).

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed.
Thanks again for the report. If the problem persists please open a new report with the required information.