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[ICEM] Problem with using the Delaunay volume mesh method |
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March 13, 2014, 07:58 |
Problem with using the Delaunay volume mesh method
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#1 |
New Member
Manahara Manatunga
Join Date: Mar 2014
Posts: 15
Rep Power: 12 |
Hello Everyone,
I have been trying to create an unstructured mesh around a Formula 1 model. I have tried using the Delaunay method to create a volume mesh around the car but the volume mesh created exceeds my defined test space. The issue is indicated in these photos.. I don't seem to understand why this happens. There might me something that I am doing wrong in my set up process so I will list the steps that I took in creating the mesh. 1. I imported the geometry, Then created the Inlet, outlet and Farfield parts. Created a body called Fluid. 2. I used the global mesh setup to define my max element size to be 4. (The test space is 10 by 20 by 10) 3. In shell mesh setup, I chose All tri and Patch Independent. 4. In volume mesh set up, selections are tetra/mixed, quick (Delaunay) and scaling factor:1.2 5. In part mesh setup, I defined the max element size on the car to be 0.05 and left all other parameters to be 0. 6. Compute mesh; surface mesh and generated a surface mesh. (image below) 7. Finally Compute mesh> Volume mesh I chose tetra/mixed, quick (delaunay) Volume part name: Inherited I would be extremely grateful if I someone can show me where I am going wrong. Thank you very much in advance! Best Regards, Manahara |
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March 13, 2014, 10:48 |
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#2 | |
Senior Member
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Quote:
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March 14, 2014, 12:22 |
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#3 |
New Member
Manahara Manatunga
Join Date: Mar 2014
Posts: 15
Rep Power: 12 |
Hi Far, Thank you for your reply! I tried reducing the max element size on Global Mesh Setup to 1 and then to 0.6. None of which worked. When computing the volume mesh, the process terminates and shows an error message saying, 'tri-to-tet mesh terminated prematurely'.
Any ideas as to why this is happening? |
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March 14, 2014, 13:49 |
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#5 |
Senior Member
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same problem i had in formula one meshing : http://www.cfd-online.com/Forums/ans...ula-one-6.html
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March 15, 2014, 16:11 |
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#6 | |
New Member
Manahara Manatunga
Join Date: Mar 2014
Posts: 15
Rep Power: 12 |
Quote:
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March 17, 2014, 14:17 |
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#7 |
Senior Member
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THis las approach is better, and I usually do this approach!!! first octree and then Delaunay...
The same if you use Shell meshin with patch independent and then delaunay!!! is the same thing!! |
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December 11, 2014, 13:37 |
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#8 |
Member
Christian
Join Date: Sep 2013
Location: Germany
Posts: 88
Rep Power: 13 |
I have the same problem.
Can someone explain me how to delete the volume mesh? Does it work if i hide the surface and show the volumes and delete all visible mesh parts? |
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December 13, 2014, 15:26 |
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#9 |
Senior Member
Join Date: Feb 2013
Location: Germany
Posts: 200
Rep Power: 24 |
There is actually a icon for this in the selection tool bar. Go to "delete elements" and the then use the very right button in selection tool bar.
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December 21, 2014, 18:16 |
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#10 |
Member
Christian
Join Date: Sep 2013
Location: Germany
Posts: 88
Rep Power: 13 |
1) Octree meshing
2) Saving Project 3) Delete Volume 4) Run delauney will not fit it for me |
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December 25, 2014, 21:52 |
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#12 |
New Member
Manahara Manatunga
Join Date: Mar 2014
Posts: 15
Rep Power: 12 |
Hey, sometimes defining the material body helps to avoid this 'mesh leak'.
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December 25, 2014, 21:54 |
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#13 |
New Member
Manahara Manatunga
Join Date: Mar 2014
Posts: 15
Rep Power: 12 |
Oh and also do not forget to run the geom topology check for holes.
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Tags |
delaunay, icem cfd 13.0, tetra mesh, unstructured mesh |
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