Rain in a puddle

[djanim8]

I'm testing to see if I can do a rain drops in very shallow puddle animation with Phoenix (kind of like this), and I have a question.

The puddle isn't a rectangle, but the simulation grid is. This is causing it to interact with the ground and particle system. I have a PFlow to create the rain drops, and even though it's set to delete the particles when it hits the "ground", it sometimes gets through a bit. This causes the simulation grid to interact with it and push water up through the ground. The simulation grid is also interacting with the ground and that also causes it to push some water up through the ground.

Since the puddle is an irregular shape, is there a way to make the simulation grid to somewhat match the shape of the puddle and ignore parts of the ground I don't want it to have simulation data with?

[georgi.zhekov]

Hello,

You can disable some of the geometry if you add it to the Interaction Exclusion list - so it won't be evaluated during the simulation.

If you take a closer look at the reference you will notice that the pavement is not exactly flat - so you can play around with your ground geo and push some parts down and others up. This will help with the irregular shape.