3ds Max PhoenixFD create custom Liquid Sim Grid?

[BStoneArch]

Hey All, I'm wondering if you can create a custom spline for the Liquid Sim Grid to extrude from in PhoenixFD. I have a series of lakes and lowlands. I want the lakes to have water, but I don't want the lowlands to. Is there a way to paint out exclusion zones, or a way to create a custom shape rather than a rectangle that fills with water?

[slavina.nikolova]

Hey,

There are a few ways to achieve such a result.

One of them is to use a Phenix FD Particle Tuner. You could create a non-solid Dummy object and place it in the areas where you want to have water. Then in the Particle Tuner create a Condition, where based on the Distance to the Dummy, the Liquid will be deleted. Here You could find some more information about the Particle Tuner - https://docs.chaosgroup.com/display/...Particle+Tuner.

Another way is to use a Cutter Geometry. This geometry will remove the Liquid that is inside of it in render time. Here You could find some more information about the Cutter Geometry - https://docs.chaosgroup.com/display/...ing-Parameters.


Hope this helps!

[Svetlin.Nikolov]

... and a few more ideas - if you use the Confine Geometry from the Grid rollout, the simulation will unfold only inside it (for this you better get a latest nightly as I just fixed a bug where liquid reacted too strongly to the confine geometry). This solution will gain some simulation speed, but will still use the same amount of RAM.

If you want to reduce the amount of RAM as well, you can break up your simulation into several consecutive simulators and link them, again from the Grid rollout, using the Cascade link.

Look these options up in the docs site for more info

Cheers!

[BStoneArch]

Thanks, this is all very helpful info!

[BStoneArch]

... and a few more ideas - if you use the Confine Geometry from the Grid rollout, the simulation will unfold only inside it (for this you better get a latest nightly as I just fixed a bug where liquid reacted too strongly to the confine geometry). This solution will gain some simulation speed, but will still use the same amount of RAM.

If you want to reduce the amount of RAM as well, you can break up your simulation into several consecutive simulators and link them, again from the Grid rollout, using the Cascade link.

Look these options up in the docs site for more info

Cheers!

Here's what I've got now. The current issue is that the three streams on the right hand side of the rendering are not converging when they overlap. I tried using the cascade simulator and referenced each stream to the other but it still isnt working well... Am I missing something or is it all about tweaking numbers and trial by error? Thanks!

https://imgur.com/a/GjmcVJV

[Svetlin.Nikolov]

Hmm, wait, can you describe your setup once again? You should use clones of the Simulator + Cascade. What do you need the references for? Do you want to have 3 identical streams pouring into the lake?