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Old   January 22, 2003, 17:04
Default Gambit and ICEM
  #1
Helen
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Hy everyone,

Does anybody know, if there any advantages of ICEM if compared to Gambit/TGrid? We are looking at which software to use.

Thank you very much for your help.

Helen.
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Old   January 22, 2003, 17:22
Default Re: Gambit and ICEM
  #2
Marc
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Hi Helen !
We used Gambit some years ago, then switched to ICEM/CFD. Do you want to create HEX meshes? You can do that with both tools, but with ICEM you can handle more complex geometries. You will probably need more time learning ICEM CFD, than learning Gambit.
So if you want to mesh many complex geometries, which completely differ from each other, you should use ICEM. If not, use Gambit.
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Old   January 22, 2003, 17:24
Default Re: Gambit and ICEM
  #3
Helen
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Thank you very much, Marc!
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Old   January 23, 2003, 07:32
Default Re: Gambit and ICEM
  #4
ff
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Hi Marc,

I know that ICEM-cfd is better mesher than probably Gambit is. But problem with icem is gaometry creation. Could you, please, explain what methods you used for geometry generation.

Thanks in advice.
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Old   January 23, 2003, 08:04
Default Re: Gambit and ICEM
  #5
Ajay s. Parihar
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All complex geometries are generated using CAD tools like IDEAS, Proe2000 and Catia. Even one can generate such geometries using ICEM DDN tool which is CAD tool of ICEM CFD.

IF you have complex geometries ICEM HEXA would be suitable for you.
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Old   January 23, 2003, 08:51
Default Re: Gambit and ICEM
  #6
ff
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What is the best way to use CAD tools you mentioned? Icem interface to CAD tools or importing igeas (or acis) files in icem?

Is icem suitable for automation of grid generetion proces (and also geometry importing)?

Wasn't icem-tetra preferable for complex geometries?

Best regards, ff

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Old   January 23, 2003, 08:53
Default Re: Gambit and ICEM
  #7
hvn
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DDN is not an easy tool to use for CAD.If you remember, Geomesh, the former pre-processor of Fluent, used DDN.
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Old   January 23, 2003, 13:08
Default Re: Gambit and ICEM
  #8
hvn
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You need to have both Tetra and Hexa module to make a hybrid mesh. You will have a huge mesh if you use only tetraedral cells for complex geometries.
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Old   January 23, 2003, 20:42
Default Re: Gambit and ICEM
  #9
derrek
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ICEM offers a package, Tetra/Prism that allows for prism elements along the walls and tets in the mean flow field. Hexa for more complex geometry or when a structured mesh is the preferred.
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Old   January 23, 2003, 20:45
Default Re: Gambit and ICEM
  #10
derrek
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If you are not already using a high end CAD system and are looking for strictly geometry creation for FEA, we use AGP from ANSYS. Same GUI as Design Space with an impressive amount of solid modelign capability. Not intended to be a stand alone CAD tool, but does what is necessary for FEA.
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Old   January 24, 2003, 11:50
Default Re: Gambit and ICEM
  #11
ff
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Hi guys,

Did anyone try to do some optimization loop coupling icem-cfd and some solver.

If yes, how?

Regards,
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Old   January 24, 2003, 13:58
Default Re: Gambit and ICEM
  #12
Ajay s. Parihar
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The ICEM CFD mesh generation systems supports over 120 solver formats for mesh export, CFD output includes CFX 4/5, Fluent, Phoenics and Star CD, FEA output includes Ansys, Abaqus, LSDYNA and Nastran.

ICEM Tetra can generate hybrid mesh including prism and tetra. You can get unstructured mesh and locally structured using ICEM Hexa.

You export your mesh in format you want depending upon your available solver. you can define boundary condition itself in ICEM and can export desired format mesh for different solvers.
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Old   January 25, 2003, 08:24
Default Re: Gambit and ICEM
  #13
ff
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Dear Ajay,

I can see that you are vary familar with ICEM. I already know everything you say in your last post and this is not new for me. This is also cleray visible at the www.icemcfd.com.

I want to know if someone try to do optimization loop with icem (as a mesh and/or cad module). If yes, how (script etc.)?

What doase icem people say?

Regards,

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Old   January 26, 2003, 10:46
Default Re: Gambit and ICEM
  #14
Mehdi ICHO
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If you want to learn ICEM-CFD you can find a simple tutorial of how to use DDN TETIN and ICEM mesher. it's in english

http://www.enseeiht.fr/hmf/travaux/C...itic/index.htm

ps: you can find also many interesting documents about many CFD codes. http://www.enseeiht.fr/hmf/travaux/T.../micp/micp.htm

Mehdi ICHO
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Old   January 31, 2003, 09:41
Default Re: Gambit and ICEM
  #15
Pop
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Hi Helen,

In terms of advantages, it depends on your application and wheter or not it is a university research or industrial. One more factor is the type of geometry you have.

I have some web linkes that might help you. Let me know what exactly you are looking for and I will forward it to you right away.

Thanks

Pop
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