Hi.

I have a problem with decreasing number of particles during simulation.
It's a moving bottle filled with fluid, at start it's almost full and at the end of simulation there is much less.
Particle separation set to 0.007, radius scale to 1.5, reseeding on with higher birth and death threshold.
A short flipbook:


thanks for any advice

That is a common problem with the FLIP system.

You can check out this video on moving contained fluid.
https://vimeo.com/137876814 [vimeo.com]

Also check out Matt's new work on stopping volume loss in FLIP.
http://www.tokeru.com/cgwiki/index.php?title=HoudiniDops#Stopping_volume_loss [www.tokeru.com]

Hey. I got some help from Houdini Artist fb group - switched off reseeding and turned on particle separation tab.
With a little adjusts of settings it stopped collapsing. But those links from you (especially video) are great!

Thanks!