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Questions about the Fluid simulation systems in blender. Blender has two systems for simulating liquids, a SPH (Smoothed Particle Dynamics) system integrated with the particle system, and a Lattice Boltzmann method which can be used create a variety of simulations.

8 votes
Accepted

Fluid going through a surface even though it is an obstacle

For your Obstacle object, under Properties panel> Physics > Fluid > Volume Initialization:, select Shell.
Shady Puck's user avatar
  • 8,977
1 vote

Fluid simulation is choppy with animated obstacle descending on Z axis [video included]

That's not an error; that's simply Blender telling you that your fluid it too low res. Generally, I would say, "up the Final Resolution: for a smoother result," but that won't help that much in your c …
Shady Puck's user avatar
  • 8,977
1 vote
Accepted

Animating objects while simulating water

You should be able to keyframe your Obstacles and then Bake. Make sure your tank never passes through your Inflow, if you have one, or is smaller then your Fluid can fall into, if you are doing it tha …
Shady Puck's user avatar
  • 8,977
1 vote
1 answer
507 views

Fakery: High Resolution Fluid Sim

I want to make an animation of an arrow (like from a bow and arrow) piercing a raindrop. Pretty quickly, it occurred to me that if I want to make a rain scene straight up, I would have to use a gigant …
Shady Puck's user avatar
  • 8,977