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-   -   Lagrangian particle tracking (http://www.cfd-online.com/Forums/openfoam-solving/69084-lagrangian-particle-tracking.html)

skabilan October 11, 2009 21:14

Lagrangian particle tracking
 
Hi All,

Does any one have a Lagrangian particle tracking tutorial that I could use? Doesn't look like there is one in the tutorial folder in OpenFOAM.

Thanks in advance!
Senthil

sebastian_vogl October 12, 2009 02:27

Hi Senthil,

you can try the dieselFoam solver, which is an Euler-/Lagrange solver originally created for spray combustion. However you can suppress the combustion to only simulate a two phase flow with Lagrangian particle tracking. For this solver there is also a tutorial available.

All the best,
Sebastian

andrewryan October 12, 2009 03:09

I'm currently looking at icoLagrangianFoam [1] and trying to understand it. However I already have trouble with the terminology. Why is it called Lagrangian Particle Tracking? Which of Lagrange's equations are involved in it?

[1 ]http://openfoamwiki.net/index.php/Contrib_icoLagrangianFoam

Edit: Forgot to mention: Also look at this post: http://www.cfd-online.com/Forums/ope...achenbomb.html

hellorishi October 12, 2009 03:48

Hi Andrew

This thesis might answer your question about equations.

http://powerlab.fsb.hr/ped/kturbo/Op...sNordinPhD.pdf

niklas October 12, 2009 05:09

Quote:

Originally Posted by andrewryan (Post 232189)
I'm currently looking at icoLagrangianFoam [1] and trying to understand it. However I already have trouble with the terminology. Why is it called Lagrangian Particle Tracking? Which of Lagrange's equations are involved in it?

[1 ]http://openfoamwiki.net/index.php/Contrib_icoLagrangianFoam

Edit: Forgot to mention: Also look at this post: http://www.cfd-online.com/Forums/ope...achenbomb.html

copy/paste from http://en.wikipedia.org/wiki/Lagrang...the_flow_field
In fluid dynamics and finite-deformation plasticity the Lagrangian specification of the flow field is a way of looking at fluid motion where the observer follows an individual fluid parcel as it moves through space and time.[1][2] Plotting the position of an individual parcel through time gives the pathline of the parcel. This can be visualized as sitting in a boat and drifting down a river.

The Eulerian specification of the flow field is a way of looking at fluid motion that focuses on specific locations in the space through which the fluid flows.[1][2] This can be visualized by sitting on the bank of a river and watching the water pass the fixed location.

andrewryan October 12, 2009 07:08

@niklas Thx I didn't find this article!

I'm also reading your thesis it's very interesting :)

skabilan October 12, 2009 13:34

Hi All,

Thanks a lot for you help!

Regards,
Senthil

ENKIME July 15, 2014 12:40

Quote:

Originally Posted by andrewryan (Post 232189)
I'm currently looking at icoLagrangianFoam [1] and trying to understand it. However I already have trouble with the terminology. Why is it called Lagrangian Particle Tracking? Which of Lagrange's equations are involved in it?

[1 ]http://openfoamwiki.net/index.php/Contrib_icoLagrangianFoam

Edit: Forgot to mention: Also look at this post: http://www.cfd-online.com/Forums/ope...achenbomb.html

Hello Andrew Ryan
Sorry for bother you but I'm stock with a conceptual problem in openFoam 2.2.2.
The issue is that I'm solving a diesel spray using sprayFoam as a solver, so I already found all the equations implicit in the Eulerian frame but the equations that involve the Lagrangrian frame I can't found the .c files that make reference of it.
The question is which are the files that make reference in the Lagrangian frame.
Thanks a lot
Kind Regards


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