CFD Online Logo CFD Online URL
Home > Forums > OpenFOAM Running, Solving & CFD

nonzero boundary conditions in attachDetachFvMesh

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

LinkBack Thread Tools Display Modes
Old   October 25, 2010, 07:16
Default nonzero boundary conditions in attachDetachFvMesh
New Member
Join Date: Oct 2010
Posts: 22
Rep Power: 8
schmittp54 is on a distinguished road
I am asking for help about the setup of a driven cavity example, where at certain trigger times an internal barrier is attached. The wall velocity of the barrier is opposite to the lid movement, so that I expect one clockwise convection cell and one counterclockwise.

Instead the result (see attached screenshot) shows only convection above the barrier, which is located at half the vertical extent. The lower half is not circulating.

The following entries in 0/U specify U=(-1,0,0) at the barrier (patches "attachTop","attachBottom"). Why is this velocity not reached in the solution?
type fixedValue;
value uniform (-1 0 0);
type fixedValue;
value uniform (-1 0 0);
I don't know how to proceed without someone's help. I'd very much appreciate if you could run the attached case, if my mistake is not obvious from the description above. These commands should reproduce my observation within a few seconds:
tar xzf newAttachDetach.tar.gz
cd newAttachDetach
setsToZones -noFlipMap
Thank you
Attached Images
File Type: png barrier.png (13.1 KB, 24 views)
Attached Files
File Type: gz newAttachDetach.tar.gz (2.2 KB, 18 views)
schmittp54 is offline   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
Impinging Jet Boundary Conditions Anindya Main CFD Forum 25 February 27, 2016 13:58
boundary conditions and mesh exporting vaina74 Open Source Meshers: Gmsh, Netgen, CGNS, ... 2 May 27, 2010 09:38
Pressure boundary conditions Lionel S. Main CFD Forum 1 August 24, 2007 18:03
Trimmed cell and embedded refinement mesh conversion issues michele OpenFOAM Other Meshers: ICEM, Star, Ansys, Pointwise, GridPro, Ansa, ... 2 July 15, 2005 04:15
A problem about setting boundary conditions lyang Main CFD Forum 0 September 19, 1999 18:29

All times are GMT -4. The time now is 08:34.