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Troubleshooting bouncy edges

Posted: Fri Nov 02, 2018 7:24 pm
by lutoluto
hi there,

huge problem, trying to sind a solution for 3 weeks now.
I want to fill a large objects with rooms and pipes in between. when my large object ist filled and the water level goes up everything is okay, until the water goes further and slower because some pipes are smaller. so i guess the pressure from the new water causes the bigger "room" to get under pressure so i get these bouny edges and if i change some parameters sometimes it explodes out of the edges. any idea how to fill a rooms and pipes while keeping the more pressure rooms calm?

example attached. I really would appreciate some help, since I am totally lost now.

starts good: https://imgur.com/TGH8o1X
then this happens: https://imgur.com/XWZgmpX
sometimes this: https://imgur.com/1vOKBQM

Re: Troubleshooting bouncy edges

Posted: Sat Nov 03, 2018 10:53 am
by ChristianZ
Hi

instead of bouncy edges I would call this leaking volumes? I assume there are particles escaping the objects. If so, there are the quality settings in the RealFlow volume settings. Have you turned off "auto" and adapted them already? For example decrease Cell size and check for the setting of Solid inside/outside. Changing the substeps of the solver could be another option.

Re: Troubleshooting bouncy edges

Posted: Sat Nov 03, 2018 1:12 pm
by lutoluto
Hi Christian,
thank you for your help.
yes with your emtnioned settings it is not leaking anymore.Got that. but still after a lot particles within a room it got super bouncy at the edges. gets a lot better changing the liquid. but still not perfect. so far big help, thanks.
may sound super stupid, but where do I find the substeps? this could be the last thing I forgot.

BIG THANKS, HUGE HUG

Re: Troubleshooting bouncy edges

Posted: Sat Nov 03, 2018 3:39 pm
by ChristianZ
You are welcome, I am glad to help.
The substeps when you turn off the automatic parameters in the solver at the very top of the RFC4D tree:
http://support.nextlimit.com/display/RF ... %3A+Solver
If this does not help enough you could introduce several k"k volume" daemons in the scene to capture escaping particles.

Re: Troubleshooting bouncy edges

Posted: Mon Nov 05, 2018 6:17 pm
by lutoluto
thats it! had to change liquid, change some settings as you said and catching some small ninja particles with k daemons. thank you so much!

Re: Troubleshooting bouncy edges

Posted: Tue Nov 06, 2018 5:11 pm
by lutoluto
ChristianZ wrote:You are welcome, I am glad to help.
The substeps when you turn off the automatic parameters in the solver at the very top of the RFC4D tree:
http://support.nextlimit.com/display/RF ... %3A+Solver
If this does not help enough you could introduce several k"k volume" daemons in the scene to capture escaping particles.



hey one thing, although I changed collision distance and so on, what is causing this: Image
It perfectly connects to all "walls" but when it is in his starter box it has a huge gap to the border of the box oO

Re: Troubleshooting bouncy edges

Posted: Tue Nov 06, 2018 6:59 pm
by lutoluto

Re: Troubleshooting bouncy edges

Posted: Wed Nov 07, 2018 5:23 pm
by ChristianZ
Hard to tell.... maybe some settings vary between the objects, or one of the objects has modeling flaws such as holes (collision volumes should be closed/watertight)?
You can visualize the real voxe-shape of the collision volumes with this option "Show Collision Geometry" and then look at the highest quality in the volume setting (need to go back to the first frame of the timeline in order to see it in C4D) http://support.nextlimit.com/display/RF ... 3A+Display

Re: Troubleshooting bouncy edges

Posted: Mon Nov 12, 2018 5:39 pm
by lutoluto
yeah you are right, I had to mannually change the size of the cells because my modeling sucks :D now i ve seen it all. thank you soooo so much!