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Gravity in fluid simulation
Confirmed, HighPublicBUG


Blender Version
Broken: version: 2.82 (sub 5), branch: fluid-mantaflow, commit date: 2019-12-16 14:05, hash: rBed32db06c124

Short description of error
With scene gravity set to zero, if I change the fluid domain gravity, it ends up behaving as if it's about 10 times too strong. So when the gravity is set to -1 m/s squared it behaves like -10m/s squared

Exact steps for others to reproduce the error

  • Add cude,
  • add sphere.
  • scale cube (2x) and make it fluid domain (Liquid),
  • make sphere a fluid liquid flow with flow behavior set to geometry.
  • Turn off scene gravity
  • set gravity in fluid domain settings to -1m/s^2 (default).
  • Bake data and see result

Event Timeline

Germano Cavalcante (mano-wii) changed the task status from Needs Triage to Confirmed.Mon, Feb 10, 2:02 PM
Germano Cavalcante (mano-wii) triaged this task as High priority.
Germano Cavalcante (mano-wii) updated the task description. (Show Details)
Germano Cavalcante (mano-wii) changed the subtype of this task from "Report" to "Bug".EditedMon, Feb 10, 2:05 PM

I can confirm.
The default values already seem to be 10 times faster.
This seems to be a regression with the new fluid system.