How to create a continuous flow of water?

Question

I have built a water slide and pool and I want to make a animation of the water running down the slide and into the pool. The problem is I need the water to be created at the top and go away at the bottom to create a continues stream of water. What would be the best way to do this?

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score 8 · Accepted Answer · answered Dec 16 '13 at 01:33

8

You will need an Inflow object and an Outflow object.

Setup your domain object. Add a cube that encloses the entire area you want the water to go (don't make it to big though, as the larger it is the more CPU time your bake will require). Then add a fluid modifier in the Physics panel with the type set to Domain
Add the inflow object at the top of the slide and the outflow object at the bottom. Add fluid modifiers with the appropriate types to the objects.
Add an Obstacle type fluid modifier to the slide and anything else you want to collide with the fluid.
Bake

answered Dec 16 '13 at 01:33

gandalf3

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The fluid obstacles aren't holding the water, do they need to be on the same layer? EDIT: Moving them to the same layer did not help. The water just keeps falling until it hits the domain – Qwertie Dec 16 '13 at 02:09
Here is the .Blend https://mega.co.nz/#!1MkVGRZB!Aaf28mAZx7fv5kWEG6MENmawY84FaPQw45kPF3-4ETc Also the inflow object is not working – Qwertie Dec 16 '13 at 02:16
@qwertyk31 They need to have some thickness. Try adding and applying a solidify modifier. As for the inflow object, it's too small for the current resolution you are baking at. Either scale it up, or increase the resolution – gandalf3 Dec 16 '13 at 02:18
That still has no efect – Qwertie Dec 16 '13 at 02:23
@qwertyk31 Strange.. It's working for me. Did you apply the modifier? – gandalf3 Dec 16 '13 at 02:27
Applying the modifier held the water, but the inflow object still does not work. – Qwertie Dec 16 '13 at 02:31
@qwertyk31 It's still working for me. Here's a blend – gandalf3 Dec 16 '13 at 02:33
Do you have any suggestions for where I'd find more specific answers for how the water modifier works? – That One Actor Mar 24 '17 at 18:25
@JustWondering If you have questions about a specific aspect or thing you want to do, you can always ask here. Otherwise, there are plenty of tutorials around (such as this one), and the manual. For more info about the the internal workings (is that what you are after?), I believe it uses a lattice-boltzmann method – gandalf3 Mar 25 '17 at 04:03

How to create a continuous flow of water?

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