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

Analyzing Convection vs. Diffusion

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   March 17, 2008, 15:03
Default Analyzing Convection vs. Diffusion
  #1
Emmanuel Resch
Guest
 
Posts: n/a
Does anyone know of a practical way to "turn off" the convective flux and just have diffusive transport? Effectively I'd like to run a diffusion-only model...

Thanks Emmanuel
  Reply With Quote

Old   March 17, 2008, 23:02
Default Re: Analyzing Convection vs. Diffusion
  #2
Pauli
Guest
 
Posts: n/a
Turn off the solution of momentum terms.
  Reply With Quote

Old   March 25, 2008, 15:35
Default Re: Analyzing Convection vs. Diffusion
  #3
Peter Specht
Guest
 
Posts: n/a
strange idea?! Diffusion is one term inside the momentum equations of Navier-Stokes. No momentum: no convection, but also no diffusion.

Peter
  Reply With Quote

Old   March 27, 2008, 15:55
Default Re: Analyzing Convection vs. Diffusion
  #4
Richard
Guest
 
Posts: n/a
Do you want to deactivate convection in all equations, or just one? There isn't a built-in general way to do it for all equations, but for scalars you can choose the "diffusion" transport method. If you were ambitious you could perhaps build on this to get diffusion-only solutions for all equations, but that's very hard.
  Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Convection, diffusion and reaction Joao CFX 0 October 25, 2008 21:19
No Convection/Diffusion: CFX4 Robin K CFX 0 September 28, 2005 17:52
convection-diffusion equation Hamid FLUENT 2 June 28, 2003 01:50
convection dominated convection-diffusion problem Kang, S. K. Main CFD Forum 0 December 22, 2000 15:25
Diffusion / convection I. Dotsikas Main CFD Forum 2 April 21, 1999 17:39


All times are GMT -4. The time now is 23:07.