Air Pockets Apearing in Simulation

[cgillon]

Hi,

I was wondering if anyone could help with the below issue.

I have a simulation to show water flowing through a pipe, the simulation runs correctly until it enters another section of the pipe where the simulation begins to look as though there are air pockets breaking up the fluid. I have included two frames of the simulation to show what I mean.

The simulation is sealed at both ends, so does Phoenix take into account air that would be trapped in the pipe? Or is this an issue with the pressure not being high enough to keep the pipe filled at all times? I would think that pressure is not the issue because these pockets are present long after the pipe should have been filled. In other words, once they appear they never go away.

Thanks

[georgi.zhekov]

Hey,

Probably it's the pressure. Does it help if you increase it or if you lower it? Can you show us your settings?

Cheers,

[Paul Oblomov]

Well, for the water phx needs relatively high spf. >5

[cgillon]

Hi,

Thanks for the replies!

My spf is currently set to 12, and the start of the simulation is correct on these settings, it is only after the fluid begins to drop into the second section of the pipe that the issue arises.

I have tried to increase the pressure but the issue is still there, even if I leave the emitter to continue to add water into the pipe after it has been filled, these pockets don't ever seem to disappear, they just move around.

Lowering the pressure isn't really an option, I need the pipes to fill at a certain rate. Lowering the pressure makes the simulation look unrealistic.

My settings are attached, hope it's useful!

Thanks

[georgi.zhekov]

What if you increase the scene scale like 2 or 3 times, does it get better? Note that this will change the behavior of the liquid.

Cheers,

[cgillon]

Hi,

I hadn't tried altering the scene scale yet, I'll try this now and see if it improves it.

Thanks