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TOPIC: Bad triangular

Bad triangular 11 years 2 weeks ago #8428

  • nguyenthong_BK
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Dear all,
I'm a user of Telemac2d software. I use Blue Kenue software to prepare my network. I would like to know how do I can find the bad triangle (if it exist) in my network with Blue Kenue software? Thank you in advance.
Best regards
Thong NGUYEN
HCMUT, VN
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Bad triangular 11 years 2 weeks ago #8429

  • Fauret
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Not knowing exactly what your problem is, it is difficult to give you a straight answer.

You can analyze the mesh with:

Edit→ T3 mesh→analyse mesh

Also, look at many of the previous discussions in the forum. Many are dealing with mesh problems:

Flat triangles in mesh from Blue Kenue
Blue Kenue mesh problems
Badly meshed parts
Etc.

Thierry
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Bad triangular 11 years 2 weeks ago #8430

  • nguyenthong_BK
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Dear Thierry
My problem is that when I have already the network from Blue Kenue software (up to 600 thousands triangular) with selafin.slf and boundary conditions file for Telemac2d. That's ok. But, when I run my simulation, program failed because the bad triangular in the network. Unfortunately, the telemac2d program don't give any information that allow to find this element! (Before, some time when I had used fudaa software to run telemac2d, it give this number of this bad triangular when the program failed. Now I use telemac2d version windown 64 bit on my PC, Fudaa software don't run! so I run telemac2d directly from command dos ).
So my question is that do we have a tools of Blue Kenue software which can identify this bad triangular in the network (if it exist) before to run Telemac2d. Thank you very much for your suggestion.
Best regards
Thong NGUYEN
HCMUT, VN
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Bad triangular 11 years 2 weeks ago #8431

  • c.coulet
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Hi Thong
Fudaa run well under windows 64 bit!
I think you should investigate this problem to solve it.
In my opinion, this comes from the java installation.
Try to install a 32 bits version of Java and run fudaa manually with a command like
"c:\Program Files (x86)\Java\jre6\bin\java.exe" -jar fudaa-prepro-xx.xx.jar
Hope this helps
Christophe
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Bad triangular 11 years 2 weeks ago #8482

  • Fauret
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I believe that in its present state, Blue Kenue does not identify the flat triangles which causes problems.

I have attached a short procedure which will identify them.

It is run from a DOS window. Provide the name of the Selafin file and the required flatness (ratio of triangle thickness to its maximum length).

Hope it will help.

Thierry
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Bad triangular 11 years 2 weeks ago #8484

  • Fauret
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Lets try with the attachment in a zip file

File Attachment:

File Name: check_triangles_in_selafin.zip
File Size: 265 KB



Thierry
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Bad triangular 11 years 2 weeks ago #8497

  • Serrer
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Hi Thong,

As Thierry said the command "Edit→ T3 mesh→analyse mesh" gives all the statistics regarding the various elements in a mesh. Unfortunately we didn't have time to program the next step, that connects this analysis to an editor/visualization tool. Perhaps in a future version...

Martin
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