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April 24, 2018, 12:51 |
Negative cell volume detected
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#1 |
New Member
sagi shahar
Join Date: Apr 2018
Posts: 1
Rep Power: 0 |
Hello everyone,
I am trying to create a fluent simulation for free falling of flat plate in-water. The plate falls between a guide box walls that are located very close to it (gap of 0.5-2 mm) and allows the plate to move only on the vertical direction. The problem occurs when I run the simulation. It stops at the beginning and shows me the massage: "Negative cell volume detected". Attached a document with print screens of the settings that I set for the simulation. The pictures are pretty unclear because I had to compress the file, so if you don't understand it I would like to send you the original file. I will be happy if someone here will be able to help me, because I've tried to solve it in many ways and I didn't succeed yet. Thank you, Sagi Last edited by sagi shahar; April 24, 2018 at 16:09. |
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May 24, 2018, 13:14 |
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#2 |
New Member
Join Date: Mar 2018
Posts: 24
Rep Power: 8 |
Did you try "display zone motion" and "preview mesh motion" in the dynamic mesh settings? With these functions you can get a good overview on which time step size is required for the remeshing to work properly.
I have faced the same problem and in my case I had to choose a smaller time step so the mesh doesn´t fold. |
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May 29, 2018, 02:06 |
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#3 | |
Member
Join Date: Jul 2012
Location: India
Posts: 32
Rep Power: 14 |
Quote:
Use tetrahedral mesh and small time-step. See the previous discussion on this website. |
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