CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > CFX

Importable grid file format for cfx 5.71

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   March 27, 2006, 10:20
Default Importable grid file format for cfx 5.71
  #1
Oliver
Guest
 
Posts: n/a
Hi,

does anyone has the description (or the link to) of an unstructured grid file format, which can be imported by cfx 5.7.1 or greater? E.G. Patran (where I don't understand the boundary definition within the named components). Favoured is ascii, but binary is also welcome (in particular it is sufficient documented). If possible, I don't want to use it via a library (e.g. as cgns).

In my opinion, the file only has to have the following sections

Thanks in advance!

Oliver

nodes 1 x1 y1 z1 2 x2 y2 z2 ... elements/cells (here hexaedrons) 1 1 2 3 4 17 16 15 14 1 21 22 23 24 99 100 101 102 ...

boundary1 (here quads) 1 1 2 3 4 2 5 6 7 8

boundary2 ...

  Reply With Quote

Old   March 27, 2006, 15:37
Default Re: Importable grid file format for cfx 5.71
  #2
Chebeba
Guest
 
Posts: n/a
How about NASTRAN? Looks a lot like what you described. Here's a small example with 7 hexa's.

/C

-----------------------------------

$ Nastran input deck

SOL 103

CEND

BEGIN BULK

GRID 1 059.00000-8.0000015.00000 0 0

GRID 2 0-6.00000-8.0000015.00000 0 0

GRID 3 059.000004.00000015.00000 0 0

...and so on down to:

GRID 16 055.40000.4000001-11.4000 0 0

$ Volume element data for family SOLID

PSOLID 1 0 0 0

CHEXA 1 1 1 2 4 3 5 6 8 7

CHEXA 2 1 9 10 12 11 13 14 16 15

CHEXA 3 1 11 12 3 4 15 16 7 8

CHEXA 4 1 10 9 2 1 14 13 6 5

CHEXA 5 1 12 10 1 3 16 14 5 7

CHEXA 6 1 9 11 4 2 13 15 8 6

CHEXA 7 1 13 14 16 15 6 5 7 8

ENDDATA

  Reply With Quote

Old   March 28, 2006, 04:51
Default Re: Importable grid file format for cfx 5.71
  #3
Oliver
Guest
 
Posts: n/a
Hi Chebeba,

thanks for your answer! Yes, this works (after I reformatted your example). But how can I define several boundary faces? Or several cell zones? I changed some parameters from 0 to 1 or to 2, but nothing happens within CFX.

Do you have a documentation about the different parameters?

Regards

Oliver

  Reply With Quote

Old   March 28, 2006, 09:13
Default Re: Importable grid file format for cfx 5.71
  #4
Chebeba
Guest
 
Posts: n/a
As usual, Google is your friend:

http://www.mscsoftware.com/support/p...elease2001.pdf

(Lots of stuff about the solver, I didn't read it all but looks like you should find what you want somewhere in there... /C
  Reply With Quote

Old   March 30, 2006, 11:40
Default Re: Importable grid file format for cfx 5.71
  #5
Oliver
Guest
 
Posts: n/a
Hi Chebeba,

thanks again. For Nastran, it seems that cfx ignore the boundaries. But I've got now the necessary information on the patran neutral file format.

Regards

Oliver

  Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
GroovyBC the dynamic cousin of funkySetFields that lives on the suburb of the mesh gschaider OpenFOAM 300 October 29, 2014 19:00
1.7.x Environment Variables on Linux 10.04 rasma OpenFOAM Installation 9 July 30, 2010 04:43
Installation of OpenFOAM-1.6 on Ubuntu 9.10 marval OpenFOAM Installation 2 March 17, 2010 09:33
Compiling gmshFoam with OpenFOAM-1.5 BlGene Open Source Meshers: Gmsh, Netgen, CGNS, ... 10 August 6, 2009 04:26
DxFoam reader update hjasak OpenFOAM Post-Processing 69 April 24, 2008 01:24


All times are GMT -4. The time now is 17:24.