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

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

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

Hi Andrew

This thesis might answer your question about equations.

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

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.

@niklas Thx I didn't find this article!

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

Hi All,

Thanks a lot for you help!

Regards,
Senthil

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