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[ANSYS Meshing] Build grid: Aborted due to critical error

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Old   January 31, 2012, 12:54
Default Build grid: Aborted due to critical error
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Krishna_Aero
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Hi All,
I am having issues with importing my 2D mesh into Fluent. The geometry has a simple conical nozzle extending into a test section that has a truncated conical specimen placed inside. Its a PATRAN file created using ESI's CFD-GEOM. I did check my grid 100 times for flaws and found none. I tried different domain configurations to make this work but that was just a waste of time. When I break my grid into 2 different pieces i.e., nozzle and test section, I am able to import them successfully. But when it comes to the whole setup, the error message " Build grid: Aborted due to critical error" pops up and the the function window says " Cell centroid is xc: "(some value)" and yc : "(some value)"
WARNING: no face with given nodes. Thread 1, cell 22109
Clearing partially read grid.
Error: Build grid: Aborted due to critical error
Error object: #f "

Please suggest some good techniques to make this work.
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Old   January 31, 2012, 13:06
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Sijal Ahmed Memon (turboenginner@gmail.com)
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it is 2d mesh?
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Old   January 31, 2012, 13:49
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A number of reasons can produce this error, don't know exactly which one?

  1. may be negative volumes? or
  2. a very very small volume? or
  3. orientation of blocks/surfaces problem? or
  4. Fastran didn't export file correctly or if you copy from another PC , incorrect copy.
  5. may be more?
I have faced this a few times. I usually revisit my mesh and try to correct all the above I mention. You can do:


  1. try to open in a serial Fluent, problem may be solved. or
  2. export in any other format accepted for fluent like CGNS/NASTRAN from FASTRAN. If problem is still there you have to remake/correct you mesh.


Regards

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Old   February 1, 2012, 22:41
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@Far: It is a 2D mesh and I trying to import it into ANSYS 13,0.
@Ali: Thanks for the suggestions. I did try importing it in different formats but that did nit work either. May be I just need to fiddle around the mesh till it gets imported. Is there any other reason that you can think of ?
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Old   February 2, 2012, 00:14
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Your mesh must be on the x-y plane, a requirement of Fluent
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Old   February 7, 2012, 12:47
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try to load ur file in tgrid or icem!
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Old   August 2, 2013, 14:15
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"
Quote:
Originally Posted by srikrishnacs View Post
Hi All,
I am having issues with importing my 2D mesh into Fluent. The geometry has a simple conical nozzle extending into a test section that has a truncated conical specimen placed inside. Its a PATRAN file created using ESI's CFD-GEOM. I did check my grid 100 times for flaws and found none. I tried different domain configurations to make this work but that was just a waste of time. When I break my grid into 2 different pieces i.e., nozzle and test section, I am able to import them successfully. But when it comes to the whole setup, the error message " Build grid: Aborted due to critical error" pops up and the the function window says " Cell centroid is xc: "(some value)" and yc : "(some value)"
WARNING: no face with given nodes. Thread 1, cell 22109
Clearing partially read grid.
Error: Build grid: Aborted due to critical error
Error object: #f "


Please suggest some good techniques to make this work.
"



I have same problem you can see problem curve when uncheck shells under mesh and associate that curve , on the other hand if you working sharp tail edge and you should create a curve this is important which is associated curve of airfoil
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