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

LPT incompressible fluid

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 13, 2018, 07:42
Question LPT incompressible fluid
  #1
New Member
 
Davide
Join Date: Jun 2018
Posts: 10
Rep Power: 6
Lighto is on a distinguished road
Hi everyone,

I'm a new member of the community.
I'm struggling with OpenFOAM to implement a lagrangian particle tracking on an incompressible fluid (i.e. blood cells in blood). I've followed many tutorials online but any of them worked for me. How can I implement LPT in icoFoam? And how can I post-process particles' properties such as their velocity and inducted shear stress?
I'm using OpenFOAM 5.0 on OpenSuse 42.2.

Thanks a lot,
Lighto
Lighto is offline   Reply With Quote

Old   June 13, 2018, 18:53
Default
  #2
Member
 
Rodrigo
Join Date: Mar 2010
Posts: 97
Rep Power: 14
guin is on a distinguished road
I think that the closest to what you are looking for is the solver DPMFoam. Indeed it is more a 2-way (kinematic) coupling between pimpleFoam + lagrangian particles with option for particle collisions.


The post-processing is quite easy:
1. paraFoam (load all objects)
2. use extractBlock filter to select your particles
3. use glyph filter e.g as spheres, scaled by the diameter and map onto them whatever property available from the list


Regarding the shear stress, I don't think there is such a thing for the particles in OF-5.0. May you rather be looking for something as the "immersed boundary" method? You can find an implementation in the foam-extend version, but keep in mind that it will not work efficiently if you want to simulate many particles simultaneously.
guin is offline   Reply With Quote

Old   June 14, 2018, 06:57
Default
  #3
New Member
 
Davide
Join Date: Jun 2018
Posts: 10
Rep Power: 6
Lighto is on a distinguished road
Thank you for the advice. Basically DMPFoam can solve pressure and velocity fields for water and simultanaously inject particles that follow the fluid velocity, is it right? So what I have to do is to specify the properties of the fluid inside trasportProperties and turbulenceProperties.fluid and than replace rho.air, U.air ecc with rho.fluid, U.fluid ecc inside the directory 0/ and the file system/fvSolution?
Lighto is offline   Reply With Quote

Reply

Tags
incompressible fluid, lagrangian particles, lpt, openfoam 5.0, opensuse leap

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
Difficulty in calculating angular velocity of Savonius turbine simulation alfaruk CFX 14 March 17, 2017 06:08
derivation for special case for incompressible fluid; condition for v? Simonee Main CFD Forum 0 March 18, 2014 06:56
What is the total energy for incompressible fluid? Harry Dong Main CFD Forum 12 February 4, 2006 00:55
Initial cinditions for incompressible fluid Vladimir Fuka Main CFD Forum 3 December 23, 2005 10:45
Terrible Mistake In Fluid Dynamics History Abhi Main CFD Forum 12 July 8, 2002 09:11


All times are GMT -4. The time now is 13:18.