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

Size of control volume

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

Reply
 
LinkBack Thread Tools Display Modes
Old   September 1, 2009, 21:13
Default Size of control volume
  #1
Member
 
John
Join Date: Aug 2009
Posts: 93
Rep Power: 7
nomad is on a distinguished road
Hi,
Why do the results change drastically if I increase the size of the control volume (eg. the mesh around an airfoil)?
The result should improve for a bigger control volume, however in my case the results diverge.
Thanks.
nomad is offline   Reply With Quote

Old   September 2, 2009, 01:28
Default
  #2
Member
 
Christof Benz
Join Date: Mar 2009
Posts: 52
Rep Power: 8
chbenz is on a distinguished road
Hi John,

in most cases you obtain a better result as much as fine your mesh is. Not the other way. An exception from this rule is for example spray-simulation.

Christof
chbenz is offline   Reply With Quote

Reply

Tags
control volume size, mesh size, openfoam

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
Superlinear speedup in OpenFOAM 13 msrinath80 OpenFOAM Running, Solving & CFD 18 March 3, 2015 06:36
On the damBreak4phaseFine cases paean OpenFOAM Running, Solving & CFD 0 November 14, 2008 22:14
Phase locked average in run time panara OpenFOAM 2 February 20, 2008 15:37
fluent add additional zones for the mesh file SSL FLUENT 2 January 26, 2008 12:55
Axisymmetrical mesh Rasmus Gjesing (Gjesing) OpenFOAM Native Meshers: blockMesh 10 April 2, 2007 14:00


All times are GMT -4. The time now is 16:10.