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January 21, 2010, 21:13 |
Lagrangian particle tracking
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#1 |
Senior Member
Jie
Join Date: Jan 2010
Location: Australia
Posts: 134
Rep Power: 16 |
Hi, I am new to use OpenFoam.
I am trying to simulate the bubble dispersion behind a circular cylinder with Lagrangian paticle tacking in OpenFOAM. Basically, I am going to integrate the bubble motion equations with the velocity data to get bubble position. I found there are four lagrangian solvers in OpenFOAM: coalChemistryFoam, porousExplicitSourceReactingParticelFoam, reactingParcelFoam and uncoupledKinematicParcelFoam. (1) Should I use "uncoupledKinematicParcelFoam"? (2) What if I wanna do 2 way coupling between the bubbles and fluids? (3) Should I modify the existing solver to implement what I need to do? Thank you very much. |
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January 27, 2010, 02:33 |
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#2 |
Senior Member
Jie
Join Date: Jan 2010
Location: Australia
Posts: 134
Rep Power: 16 |
Does anyone doing Lagrangian particle tracking?
Cheers |
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April 12, 2010, 07:24 |
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#3 |
Member
Alessandro
Join Date: Nov 2009
Posts: 67
Rep Power: 17 |
I join this thread because could be usefull also for me..I'am trying to simulate particle tracking around a cylinder
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June 21, 2010, 10:15 |
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#4 |
Member
Alessandro
Join Date: Nov 2009
Posts: 67
Rep Power: 17 |
Nobody can help us???
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September 6, 2010, 09:25 |
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#5 |
New Member
santosh
Join Date: Nov 2009
Posts: 3
Rep Power: 17 |
Hello:
I am also facing the same dilemma about "uncoupledKinematicParcelFoam". Whether the solver supports two way coupling? I can see the option "coupled true;" in properties file "constant/kinematicCloudProperties". But from the solver name, I feel that it it might be uncoupled (???). I am not very conversant with the solver code and could not trace whether it is implemented or not? Can anybody help? |
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September 10, 2010, 01:24 |
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#6 |
Member
edison
Join Date: May 2009
Location: Australia
Posts: 35
Rep Power: 17 |
From the source code, I see no coupling between Lagrangian and Eulerian FV schemes. It's a pure Lagiangian solver.
take a look at the wiki http://openfoamwiki.net/index.php/Sig_Multiphase Hoping it's helpful to you. |
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September 16, 2010, 11:17 |
Lagrangian ConeInjection
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#8 |
New Member
Noggin
Join Date: Sep 2010
Posts: 7
Rep Power: 16 |
For the uncoupledKinematicParcelFoam the velocity field, temperature field and other bits are read in at the beginning but do not change with time. Only the lagrangian particles are evolved. (Also there is no tutorial case for this it seems).
There is another lagrangian application kept in the tutorials, called rhoPisoTwinParcelFoam (it is exemplifying both the kinematic cloud and the thermo cloud) . I'm not sure why it is kept there. I have a question about the boundary conditions on any of the lagrangian codes. The ManualInjection option inputs parcels at a given point in time. The ConeInjection method would appear to be the method of choice if I want to stream particles over a period of time. Using the above code, I altered the injection method to the Cone method (for which the code was already written), but unfortunately there was no output in paraview, although it appeared in the output written to screen as though there was a one-off injection of particles. Has anyone else had problems with this? What am I doing wrong!? |
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September 17, 2010, 01:50 |
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#9 |
New Member
santosh
Join Date: Nov 2009
Posts: 3
Rep Power: 17 |
It is not possible to post-process Lagrangian particle in OpenFOAM. But there are ways to do it. See the FAQ 6.1 on below link.
http://openfoamwiki.net/index.php/Main_FAQ |
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September 17, 2010, 03:23 |
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#10 |
Member
edison
Join Date: May 2009
Location: Australia
Posts: 35
Rep Power: 17 |
is there a lagrangian folder under the time folder? I'm using paraFoam build in OF1.6 and the particles are clearly shown. just check the object inspector window and make sure you have ticked the lagriange property.
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September 17, 2010, 15:16 |
rhoPisoTwinParcelFoam
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#11 |
New Member
Noggin
Join Date: Sep 2010
Posts: 7
Rep Power: 16 |
It turns out the visualization of the lagrangian particles did work, I just hadn't realized how it was done (I'm still not clear, but it appears paraFoam treats the particles as part of a mesh or grid region) - I'm using v1.7.
For the simulations mentioned in the above comments, I think rhoPisoTwinParcelFoam should be fine, although only one of the parcel types would be needed. |
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September 20, 2010, 05:47 |
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#12 |
Member
Alessandro
Join Date: Nov 2009
Posts: 67
Rep Power: 17 |
Hello,
is there in openFoam a uncompressible solver for particle traking??
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April 10, 2011, 13:31 |
What about icoLagrangianFoam or solidParticle?
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#14 |
Member
Andrew Ryan
Join Date: Mar 2009
Posts: 47
Rep Power: 17 |
icoLagrangianFoam uses a two-way coupling I think, while solidParticle uses a one-way coupling. There is no solver using solidParticle, but you can easily create your own, for more info read the concerning page on the OpenFOAM wiki. I'm looking for a paper or something which describes the drag model used in solidParticle. Also I don't agree with some of the implementation details in solidParticle.
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December 9, 2011, 23:53 |
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#15 |
New Member
Jonas L. Ansoni
Join Date: Jun 2011
Location: Brazil
Posts: 22
Rep Power: 15 |
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July 19, 2017, 12:18 |
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#16 | |
Senior Member
Reviewer #2
Join Date: Jul 2015
Location: Knoxville, TN
Posts: 141
Rep Power: 11 |
Quote:
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