CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

How to use lagrangian tool library

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 8, 2008, 08:36
Default Hello Foamers, i'm new to O
  #1
New Member
 
Oliver Sommer
Join Date: Mar 2009
Posts: 12
Rep Power: 17
lynx is on a distinguished road
Hello Foamers,

i'm new to OpenFOAM and again i have a question - i hope you can help me.

I simulated a "ZickZack"-Separator with succes - means pressure-, velocity- fields are looking okay.

Now i want to simulate the little (light) particles in this separator, which will follow the airstream through the separator (heavy particles will fall down and i ignore the results (vorticies ) produced by the airflow around them - cause to much effort {moving mesh etc.}). I read in the User manual about "lagrangian" in the "Lagrangian particle tracking libraries"-section, but i don't have any idea how to use it.

Can you explain me in general how to use the lagrangian particle tracking tool please?

for example..
How to start it?
It is calculated after the calculation of my case or put together in one calculation (can i switch it on/ off like the turbulence?)?
How can i create some particles at a user defined point and give them some initial velocity?

I'm really sorry for wasting your time with this questions, but i don't find any help written in the manual for this problem - it would be very great if you can help me a little bit. Thank you in advance.
lynx is offline   Reply With Quote

Old   April 8, 2008, 16:30
Default Hi Oliver! The lagrangian p
  #2
Assistant Moderator
 
Bernhard Gschaider
Join Date: Mar 2009
Posts: 4,225
Rep Power: 51
gschaider will become famous soon enoughgschaider will become famous soon enough
Hi Oliver!

The lagrangian particle tracking method can not be used on its own, but with a solver that integrates it. There are two solvers that I know of:
- the dieselFoam-solver that comes with the OpenFOAM-distribution. Which may be an overkill for your application (combustion, etc )
- the technology demo that is published under http://openfoamwiki.net/index.php/Co...LagrangianFoam (which may be an underkill for your application - you'll propably have to modify the way particles are injected into the fluid - see discussions elsewhere on the Messageboard)

Bernhard
__________________
Note: I don't use "Friend"-feature on this forum out of principle. Ah. And by the way: I'm not on Facebook either. So don't be offended if I don't accept your invitation/friend request
gschaider is offline   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
Lagrangian Approach Biswajit Sarkar Main CFD Forum 9 January 25, 2013 09:31
About AMR Library C.-G. CHEN Main CFD Forum 0 October 31, 2007 01:34
Lagrangian Approach Biswajit Sarkar Main CFD Forum 3 August 4, 2005 14:42
Library JB Phoenics 0 June 20, 2004 16:12
Lagrangian FEM for CFD Shyam Main CFD Forum 0 January 20, 2004 00:44


All times are GMT -4. The time now is 09:20.