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

what equation does fluent solve if the viscous model is laminar?

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

Like Tree1Likes
  • 1 Post By flotus1

Reply
 
LinkBack Thread Tools Display Modes
Old   November 23, 2013, 10:57
Default what equation does fluent solve if the viscous model is laminar?
  #1
New Member
 
wang
Join Date: Oct 2013
Posts: 5
Rep Power: 3
wxf1037 is on a distinguished road
If the viscous model is laminar, what equation does fluent solve?


Thank you!
wxf1037 is offline   Reply With Quote

Old   November 23, 2013, 12:43
Default
  #2
Senior Member
 
flotus1's Avatar
 
Alex
Join Date: Jun 2012
Location: Germany
Posts: 1,104
Rep Power: 19
flotus1 will become famous soon enoughflotus1 will become famous soon enough
The Navier-Stokes equations discretized by the finite volume method...
flotus1 is offline   Reply With Quote

Old   November 23, 2013, 14:15
Default
  #3
New Member
 
wang
Join Date: Oct 2013
Posts: 5
Rep Power: 3
wxf1037 is on a distinguished road
Thank you flotus1!

But I don't know can I trust the result ?

What is the difference between laminar model and turbulence model? Do you have some document about it ? If you have some, can you tell me ?
wxf1037 is offline   Reply With Quote

Old   November 23, 2013, 17:50
Default
  #4
Senior Member
 
flotus1's Avatar
 
Alex
Join Date: Jun 2012
Location: Germany
Posts: 1,104
Rep Power: 19
flotus1 will become famous soon enoughflotus1 will become famous soon enough
There is no turbulence model involved when the viscous "model" is set to laminar.
flotus1 is offline   Reply With Quote

Old   November 24, 2013, 08:39
Default
  #5
New Member
 
wang
Join Date: Oct 2013
Posts: 5
Rep Power: 3
wxf1037 is on a distinguished road
Quote:
Originally Posted by flotus1 View Post
There is no turbulence model involved when the viscous "model" is set to laminar.

Thank you .
I got clear about it . Does it like a DNS simulation? But because of the mesh size , it can't get the turbulence.
wxf1037 is offline   Reply With Quote

Old   November 24, 2013, 10:30
Default
  #6
Senior Member
 
flotus1's Avatar
 
Alex
Join Date: Jun 2012
Location: Germany
Posts: 1,104
Rep Power: 19
flotus1 will become famous soon enoughflotus1 will become famous soon enough
With the viscous model set to laminar in Fluent, you are performing a DNS.
But as you already noticed, the results are affected by the discretization so you have to be very careful when trying to simulate turbulent flows.

I wonder if anyone has ever successfully conducted a DNS of a 3-dimensional turbulent flow with Fluent.
rajasekar0007 likes this.
flotus1 is offline   Reply With Quote

Reply

Tags
fluent

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
Water subcooled boiling Attesz CFX 7 January 5, 2013 04:32
Can I use turbulent model to solve a laminar flow? nikhil FLUENT 5 February 1, 2011 11:42
Reynolds Stress model in CFX vs Fluent Tim CFX 1 October 7, 2009 06:19
Half laminar and turbulent model trying to solve Andrew Clarke FLUENT 5 May 19, 2008 13:40
Advanced Turbulence Modeling in Fluent, Realizable k-epsilon Model Jonas Larsson FLUENT 5 March 13, 2000 04:27


All times are GMT -4. The time now is 14:18.