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April 20, 2022, 10:19 |
velocities exceeding critical value N 61
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#1 |
New Member
shuqichang
Join Date: Feb 2022
Posts: 23
Rep Power: 5 |
Hello,
I always get an error at run time that is faster than N 61. I also tried to change some of the parameters, but nothing worked out. I hope you can help me solve it. Attached are my running file and STL file. Thank you for your help . |
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April 22, 2022, 08:44 |
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#2 |
Senior Member
Arun Kamath
Join Date: Nov 2014
Location: Trondheim, Norway
Posts: 265
Rep Power: 13 |
Some comments:
You are attempting a 3D simulation with 2D boundary conditions. control.txt should have C12 and C 13 as 21 C 14 also 21. ctrl.txt I 12 1 N 40 3 N 47 0.1 Have you tried refining the grid, say to dx=0.5m?
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Arun X years with REEF3D |
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April 22, 2022, 09:06 |
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#3 | |
New Member
shuqichang
Join Date: Feb 2022
Posts: 23
Rep Power: 5 |
Quote:
I will make corrections according to your suggestions. But I removed X 24 after I asked the question, and it worked fine without the error of exceeding N 61. I'm not sure if the problem has anything to do with X 24. |
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April 22, 2022, 10:07 |
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#4 |
Senior Member
Arun Kamath
Join Date: Nov 2014
Location: Trondheim, Norway
Posts: 265
Rep Power: 13 |
That is interesting.
Are you sure then that the X 24 inputs you provide are correct? A wrong input for the moment of inertia can be a problem. OR The stl file may have two few triangles for representing the structure. This can be improved using the cad software you used to generate the stl file.
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