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

what is the Typical cell size?

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

Reply
 
LinkBack Thread Tools Display Modes
Old   February 24, 2009, 22:12
Default what is the Typical cell size?
  #1
mike
Guest
 
Posts: n/a
am trying to run unsteady case, and in order to do that I need to estimate (delta t)

delta t= Typical cell size/characteristic flow velocity

(this eqution from fluent.com)

can any body help in this

thanks
  Reply With Quote

Old   February 25, 2009, 15:05
Default Re: what is the Typical cell size?
  #2
orca
Guest
 
Posts: n/a
In 3d you could use cube root of volume/#_of_cells. Just an estimate.

HTH
  Reply With Quote

Old   February 25, 2009, 16:14
Default Re: what is the Typical cell size?
  #3
Ralf Schmidt
Guest
 
Posts: n/a
Hi!

i would use the finest grid cell for calculation. So you can be sure that flow is resolved everywhere

Best whises Ralf
  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
Limit on maximum cell size to minimum cell size ratio albcem OpenFOAM Running, Solving & CFD 2 October 17, 2011 12:00
cumulus cloud typical speed and eddy size Facewindu Main CFD Forum 1 March 21, 2008 20:16
cell size Baskar CD-adapco 4 January 18, 2006 14:34
cell size Sam FLUENT 2 March 11, 2005 04:33
cell size solomon Main CFD Forum 0 May 17, 2003 13:52


All times are GMT -4. The time now is 02:25.