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

suitable boundary conditions

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 7, 2009, 04:10
Default suitable boundary conditions
  #1
New Member
 
S M Khan
Join Date: Sep 2009
Posts: 17
Rep Power: 7
smkhan is on a distinguished road
hello!


i imorted a mesh of multiple blocks. viz. 3 blocks. innermost block is having a very fine mesh and enclosing a pleated airfoil. outermost block and 2nd outermost blocks are having coarser mesh in the FLUENT. and this blocks resembles like a rectangle. i put the boundary conditions as velocity inlet at the entrance, outflow at the exit, upside and downside of the rectangular mesh are kept as outflow condition but not allowed to go out from these two sides. Thereafter, i run it with a time step size 0.01 and 50000 iterations. but there is no vortex shedding near airfoil what is the reason of not forming vortex shedding. please let me know the conditions to be put on the mesh to get the vortex shedding near the airfoil.

Thank You
smkhan is offline   Reply With Quote

Reply

Tags
boundary conditions, fluent, vortex shedding

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
inlet velocity boundary condition murali CFX 5 August 3, 2012 08:56
Problems with boundary conditions for a lowRekOmegaSST turbulence model cfdmarkus OpenFOAM Running, Solving & CFD 16 November 14, 2011 04:44
Concentric tube heat exchanger (Air-Water) Young CFX 5 October 6, 2008 23:17
Boundary conditions for turbulent boundary layer Thomas FLUENT 1 June 17, 2008 05:14
Copying boundary conditions from model to model Lior FLUENT 3 September 23, 2004 16:10


All times are GMT -4. The time now is 17:45.