Faces disappearing from domain mesh during fluid simulation

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Faces disappearing from domain mesh during fluid simulation

Post  Scooter2 on Mon May 04, 2015 9:26 pm

Good evening,
After much experimenting, I finally got what looked like a great simulation of a fish splashing in a pond.  However, when I animated it I can see random patches where the domain mesh is open because a face is missing.  I scrolled through the frames one at a time and I found that my 210 frame simulation has 33 frames with at least one face missing.
Resolution is 250, smoothing is 2 and subdivisions is 2 with no particles.
What is interesting is this occurs out in the water where it is relatively still even.  If it were one or two frames, I would just delete them and renumber the remaining baked frames, because I found that works.

Any ideas on why it does that, or a way to fix it?  I am using version 2.69 for this simulation.
Please let me know.
Thanks,
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Re: Faces disappearing from domain mesh during fluid simulation

Post  Yodaman921 on Tue May 05, 2015 3:37 pm

Hey Scooter,

Unfortunately I don't have any idea on how to fix the issue, I haven't used the water sim in quite some time. From what I understand though, the domain mesh will have faces randomly disappear on it throughout various frames? Did you happen to notice if this started happening after changing a certain setting or have you tried removing/re-adding the water sim? Like I said, I don't know too much about the water sim anymore, but you could try to troubleshoot your problem by changing 1 variable at a time and seeing what happens. Although I would recommend duplicating the file you're working in so you don't potentially ruin your actual project.
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Re: Faces disappearing from domain mesh during fluid simulation

Post  Scooter2 on Tue May 05, 2015 10:51 pm

Good evening,
Thanks for the reply. You are correct, the faces randomly disappear and from frame to frame. I have ran many simulations with settings changed. The only thing I have found is that a change will also change the random face dropping. I may try combining simulation bakes with a slight change in resolution to get a clean set.
I will let you know if that works.
Thanks,
Scooter

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Re: Faces disappearing from domain mesh during fluid simulation

Post  Scooter2 on Fri May 08, 2015 7:08 pm

Good evening,
Well, unfortunately it is related to the smoothing option in the domain settings. It will only create this particular simulation with the setting at zero. I tried all other variations. I think I can use it and add a smoothing modifier.
Perhaps I have learned enough to help someone else
Thanks,
Scooter

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