Proper workflow with water sim

[alessandromastronardi]

Hello, I'm using latest Phoenix FD version with Maya 2018. I'm very new to both so I'd like to ask, first of all, what's the common rule for initializing a water sim so that it doesn't start as a flat board of water, but it already has some physics cycles. I'm currently doing it by setting the animation range to -100, so that in the range [-100, -0] the sim has time to run and displace the water. Is this good practice or there are better ways?
Second, in the scene I'm building, there is no wetting and no liquid consumption set, and even if the grid is adaptive (but the size increase is neglectable), as the animation reaches the end there are *holes* in the water surface. I'd expect instead to still have the water surface covering the whole grid floor. I suspect there are some other parameters that I'm missing? Thanks for any suggestion.

[Guest]

Hi,
yep, it's totally ok to have some initializing frames. Another way is to use n-th frame for the beginning of a simulation. See "Load & Start" option here: https://docs.chaosgroup.com/display/...uid+Simulation
In your case, losing the liquid may be caused be open grid walls. If they're open then the liquid will pour out. Check the Boundary conditions in Simulation roll-out.

If the problem still exists feel free to write down what's going on and any additional info would be great (a screenshot of the settings or attach the scene in .rar or .zip file here).

[Svetlin.Nikolov]

Another possible reasons for losing liquid is Wetting with enabled Consumed Liquid - make sure Consumed Liquid is 0. Also, there is a known issue with deforming/skinned geometries interacting with Phoenix where liquid particles would die.