CFD Online Logo CFD Online URL
Home > Forums > FLUENT

GAMBIT grid generation

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

LinkBack Thread Tools Display Modes
Old   February 11, 2005, 05:35
Default GAMBIT grid generation
Posts: n/a
Hi friends,

In GAMBIT, Whenever any complex geometry is taken into account, it is really time consuming to break the single model and generate grid individually in each and every broken up model.

Particularly this case happens when a complex casting model or automobile omponenent is taken into consideration.

Mostly this type of mesh generations are done in PRO-E or CATIA and imported into Gambit as a STEP file or ACIS file.

IS it possible to generate mesh in GAMBIT at one single "GO".

I have tried giving mesh sizes upto 0.0001. But iam yet to be successsfull in that.

Is there any mathematical calculation to deicde the size of the cell.

Can anyone help my in giiving idea for this? because it consumes lot of time to create mesh in a complex geometry in GAMBIT.


  Reply With Quote

Old   February 11, 2005, 10:52
Default Re: GAMBIT grid generation
Posts: n/a
depends what kind of grid ur looking for! If you have no restriction a tet grid should go thru for most geometries
  Reply With Quote

Old   February 12, 2005, 01:11
Default Re: GAMBIT grid generation
Posts: n/a

I go for tetra grid for complex 3D geometries. Thats why may be Iam facing the problem.

  Reply With Quote

Old   February 12, 2005, 11:26
Default Re: GAMBIT grid generation
Posts: n/a
There isn't any way of just importing and saying "go" in Gambit. I've heard that some other pre-processors are able to deal with this in a more automated fashion, but I don't have any experience with them (like Gridgen, etc...). If you have to use Gambit (like me... company won't spring for a separate pre-processor, so instead they're spending tons of money to have me waste time on meshing... go figure) then I suggest learning the Clean up tools (which started with Gambit 2.1). These sometimes help, but its still a pretty manual process.

Goodluck, Jason
  Reply With Quote

Old   February 12, 2005, 14:28
Default Re: GAMBIT grid generation
Posts: n/a
yes, jason's right. But, I have worked with a really complex geometry and if a tet still works if u fairly divide the geometry and use some cleaning features with gambit. But, incase you want to use anything other than a tet, u will be asking for much more manual time getting the geometry to be divided thoroughly enough and without being sure that the time would actually be worth it at the end. happy working! -samir
  Reply With Quote


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
Grid Generation Michail Main CFD Forum 19 June 30, 2005 02:41
Grid generation Z Main CFD Forum 2 February 22, 2005 05:31
structured grid generation pertup Main CFD Forum 0 November 2, 2004 04:05
structured grid generation problem Mehdi Main CFD Forum 0 July 6, 2004 09:19
Data Structures for unstructured grid generation Dinesh Godavarty Main CFD Forum 0 December 5, 2000 11:49

All times are GMT -4. The time now is 06:25.