CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

Gambit - Virtual Geometries (Pro's & Con's)

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

LinkBack Thread Tools Search this Thread Display Modes
Old   July 23, 2003, 19:08
Default Gambit - Virtual Geometries (Pro's & Con's)
James Date
Posts: n/a

Please could someone briefly tell me the Pro's and Con's of using the virtual geometry option within Gambit?

I know that using virtual geometries can make meshing difficult problems easier and can help when cleaning up imported geometries.

However, what about when you are creating geometries from scratch in Gambit?

Not being able to use Boolean operations with virtual geometries in Gambit can be a real pain, when you want to solve the flow around; say a complex virtual hydrofoil geometry. Sticking virtual faces together to make virtual volumes can be rather time consuming!

If the geometry had been created as real entity, you could just simply take it away from a simple box and thus solve the flow around it.

Basically, what I'm asking is; are there pitfalls to using virtual geometries further to the ones I have already mentioned above?

Thanks James
  Reply With Quote

Old   July 24, 2003, 06:49
Default Re: Gambit - Virtual Geometries (Pro's & Con's)
Posts: n/a
I try to avoid virtual geo as much as possible ..for me they have created more mess than help .... after spending a day or two ..its usual to face error such as : operation not possible becuase real or virtual entity is involved ..or somethign like that ...but since they are there in gambit they will be for some help ..if we know how to use properly (not my cup of tea).
  Reply With Quote

Old   August 2, 2003, 07:06
Default Re: Gambit - Virtual Geometries (Pro's & Con's)
Posts: n/a
real geomery means: the geometry is made with a good 3d-cad-kernel: ascis (or acsis? ). Virtual geometry is programmed from fluent. That means: real is higher level --> use as long as possible.
  Reply With Quote

Old   August 11, 2003, 15:46
Default Re: Gambit - Virtual Geometries (Pro's & Con's)
Steven Smith
Posts: n/a
After a very painful learning process, I experimented with using 100% real geometry - no virtual anything. It required a different approach, but almost all my Gambit problems immediately disappeared! I still believe virtual geometry does have some benefits, but using it introduces the risk of encountering a land mine down the road. So if you are having issues with Gambit crashing and otherwise not working as it should, considering an experiment with only real geometry.
  Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
OpenFoam 14 installation problem gfcoppola OpenFOAM Installation 20 November 2, 2007 13:38
GAMBIT - VIrtual edges and Real face Bridou FLUENT 1 July 22, 2007 12:57
How to fuse two differents geometries with Gambit? RĂ©mi CASSAR FLUENT 2 July 12, 2007 04:08
Handling Virtual volumes in Gambit Bharath FLUENT 4 October 30, 2006 20:24
Convert Real edges to Virtual in Gambit Freeman FLUENT 6 October 24, 2005 15:14

All times are GMT -4. The time now is 04:35.