Problem at the boundaries of the fluid

[DiuS]

Hi! I tried to make a simulation of chocolate. But at the edges of the chocolate appears strange stair-stepping artifacts. I tried a variety of settings, different grid resolution, but nothing helped. I only slightly improved the situation.
Is there any way to solve this problem?

[Ivaylo Katev]

this edges are grid artifacts, very annoying problem in the viscous simulations.
well, i would recommend you to ask the support for nightly build access and to get the tomorrows nightly, and to use the flip solver.
with a grid based solver the grid artifacts are very hard to beat, here you can see a very fast demo of viscosity scene that i just made with the flip solver, there are no grid artifacts at all.

[DiuS]

And one more question. Can I cached animated fluids? And later edit as animating mesh.
Or I can edit only as a static mesh

[DiuS]

And why is not working channel Velocity.

[Ivaylo Katev]

when you enable the mesh preview, you can export the liquid as vray proxy, that can handle animations.

[DiuS]

Thank you! But unfortunately this is not exactly what I need. The idea was to create a simulation. In which the fluid passes around an object. And then in some frames manually change the direction of the fluid. Or apply a modifier deformation for this purpose. Make a "dishonest" simulation.

[Ivaylo Katev]

you mean to interfere the simulation, not to modify the result? well, the best way is to create a moving geometry, disable the "solid object" option and put it to be a source with all channels disabled except the velocity, only "affect velocity" must be on. with the discharge value you can control how "hard" to be the velocity footprint over the fluid.