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

Why Re is diff for external and internal flow?

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 10, 2007, 22:32
Default Why Re is diff for external and internal flow?
  #1
john
Guest
 
Posts: n/a
We know that Reynold's no is different for internal flow and external flow? I wonder why does it happen? Is it the charecteristic length, which is different in both and so Re is different in both?
  Reply With Quote

Old   June 13, 2007, 02:58
Default Re: Why Re is diff for external and internal flow?
  #2
Anton Lyaskin
Guest
 
Posts: n/a
If you are talking about critical Re, then it's really because of characteristic length. To compare them directly you'll need to use boundary layer thickness for external flow, instead of body size
  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
Pipe flow / Internal fluid dynamics with SnappyHexMesh denner OpenFOAM Native Meshers: snappyHexMesh and Others 3 October 13, 2011 09:24
Advice on turbulence model for complex internal flow JPBodner Main CFD Forum 1 September 3, 2011 03:07
Modeling internal and external flow for a nozzle smschnob Main CFD Forum 1 November 11, 2010 18:12
internal flow and external flow ? Pathway0320 FLUENT 1 November 17, 2006 04:37
fluid flow fundas ram Main CFD Forum 5 June 17, 2000 21:31


All times are GMT -4. The time now is 22:59.