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

The difference between Laminar model and DNS at lo

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   March 11, 2005, 21:22
Default The difference between Laminar model and DNS at lo
  #1
fpz
Guest
 
Posts: n/a
Hi,all, I am newer in CFD. Laminar model is preferable when I choose a mathematical model for low Re problem in Fluent(for example, channel flow less than 2000). But I cannot make a differnce betwwen laminar model and DNS at low Re because here laminar model solves the N-S equation directly. Can I say that Laminar model equals to DNS at low Re given that the mesh resolution is suffcient small? Many thanks!
  Reply With Quote

Old   March 13, 2005, 18:57
Default Re: The difference between Laminar model and DNS a
  #2
dirk
Guest
 
Posts: n/a
You can say that.
  Reply With Quote

Old   March 13, 2005, 23:55
Default Re: The difference between Laminar model and DNS a
  #3
fpz
Guest
 
Posts: n/a
Thanks. However, if Re is greater than 2000, how about the difference given the mesh resolution is sufficent small? If it is okay, can we say that laminar model equals to DNS?
  Reply With Quote

Old   March 14, 2005, 07:33
Default Re: The difference between Laminar model and DNS a
  #4
mateus
Guest
 
Posts: n/a
Hi!

Be carefull with the phrase suficient resolution when talking about DNS...That means about 10^10 nodes for Re=2000 (Re^3)...

Otherwise you can say that...

MATEUS
  Reply With Quote

Reply


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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Laminar model in Fluent thecfduser FLUENT 8 February 8, 2016 14:42
New implemented algebraic Reynolds stress model volker OpenFOAM 13 October 21, 2013 01:01
DNS with fluent jenny FLUENT 14 December 2, 2009 09:52
Laminar solver? LES? or DNS? Ray Main CFD Forum 5 March 19, 2003 11:19
Laminar model the same as DNS? Kerrin Main CFD Forum 6 February 24, 2003 16:12


All times are GMT -4. The time now is 09:08.