CFD Online URL
[Sponsors]
Home > Forums > CFX

Setting up a standard interface.

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

Reply
 
LinkBack Thread Tools Display Modes
Old   October 27, 2006, 13:12
Default Setting up a standard interface.
  #1
Flavio
Guest
 
Posts: n/a
Hi. Trying to learn to use CFX i found a huge lack in the tutorial material gathered into CFX and around the web. I have a whole fluid domain, and i need to split it into two different parts, in order to obtain two different assemblies so that i can set the rotating impeller domain and the statoric one. The problem is that i don't know how to operate the split. Does it need to be operated in CFX-Mesh? Or in DM? If so, does exist a proper feature to do so? Otherwise i guess i have to "manually" cut the whole fluid volume and save the result as statoric_fluid_volume.agdb, operate the complementary cut and save as impeller_fluid_volume.agdb. Then import both files into cfx-mesh. Is this the right way? It seems quite coarse to me.

Futhermore, I'd like to have any suggestions in order to place correctly the interface in order to set up a good simulation (for example, tutorials suggests not to place the interface too near to the impeller, since it would create matching/convergence problems).

Thank you very much.
  Reply With Quote

Old   October 27, 2006, 13:59
Default Re: Setting up a standard interface.
  #2
Alex
Guest
 
Posts: n/a
Hi. Yes you are right. You need to split the geometry in a CAD software, i.e. Catia or DM. Then mesh them respectively. After that they should be imported into CFX pre and use the domain interface function to connect the two domains.

I never seen a article discuss the proper interface position. Based on my experience, place the interface at the middle between blade outlet and pump housing is a good choice.

  Reply With Quote

Old   October 27, 2006, 14:21
Default Re: Setting up a standard interface.
  #3
Robin
Guest
 
Posts: n/a
Read the Best Practices Guide for Turbomachinery in the on-line help. There is a section on domain interface setup. In DM, draw a line to cut your part and revolve it using the Cut Material operation, setting the thin surface option on and specifying 0 inward and 0 outward thickness. This will slice your model and keep the parts separate. You can then mesh them in one go in CFX-Mesh, or independantly.
  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
Wind turbine simulation Saturn CFX 34 October 16, 2014 06:27
Cells with t below lower limit Purushothama CD-adapco 2 May 31, 2010 22:58
RPM in Wind Turbine Pankaj CFX 9 November 23, 2009 05:05
Warning 097- AB CD-adapco 6 November 15, 2004 05:41
Replace periodic by inlet-outlet pair lego CFX 3 November 5, 2002 21:09


All times are GMT -4. The time now is 16:58.