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-   -   Lagrangian particle Track (https://www.cfd-online.com/Forums/openfoam-solving/151168-lagrangian-particle-track.html)

elah599 April 5, 2015 15:31
Lagrangian particle Track
 
Dear Foamers

I want to simulate the particle track in a steady incompressible flow and I want to consider two way coupling between particles and base fluid by adding different forces such as lift,drag and Brownian. could you help me which solver is appropriate for this lagrangian particle track?

thank you in advance

chpjz0391 June 2, 2016 21:39
Quote:
Originally Posted by elah599 (Post 540049)
Dear Foamers

I want to simulate the particle track in a steady incompressible flow and I want to consider two way coupling between particles and base fluid by adding different forces such as lift,drag and Brownian. could you help me which solver is appropriate for this lagrangian particle track?

thank you in advance
Hi elah,

I think DPMFoam could meet your requirement.

Cheers.

bijan darbari June 3, 2016 01:46
Dear elah599

you can use "dpmfoam" solver. but this solver don't solve heat transfer equation. so the brownian force can't be acitvated.

If you want to solve heat transfer equation and brownian force, use "reactingparcelfoam" and deactivate combustion, chemistry, evapoartion,... to solve a two way lagrangian solid particle with eulerian single phase fluid.
If you have more questions ask me!

Danath June 3, 2016 07:35
I think that brownian force doesn't work as is supposed.

It seems the brownian force overcomes the paramagnetic force and this is not true.
Under the magnetic force the magnetic nanoparticles are formed into chains.

With the brownian force activated the particles are moving very fast and the magnetic force seems not to affect at all the particles. Many of these are are lost after some iterations.



Quote:
Originally Posted by bijan darbari (Post 603220)
Dear elah599

you can use "dpmfoam" solver. but this solver don't solve heat transfer equation. so the brownian force can't be acitvated.

If you want to solve heat transfer equation and brownian force, use "reactingparcelfoam" and deactivate combustion, chemistry, evapoartion,... to solve a two way lagrangian solid particle with eulerian single phase fluid.
If you have more questions ask me!

chpjz0391 June 3, 2016 12:46
Quote:
Originally Posted by bijan darbari (Post 603220)
Dear elah599

you can use "dpmfoam" solver. but this solver don't solve heat transfer equation. so the brownian force can't be acitvated.

If you want to solve heat transfer equation and brownian force, use "reactingparcelfoam" and deactivate combustion, chemistry, evapoartion,... to solve a two way lagrangian solid particle with eulerian single phase fluid.
If you have more questions ask me!
Dear bijian,
The reactingparcelFoam cannot simulate incompressible fluid and the collision between particles . And the DOMFoam cannot solve the dilute phase I think.

bijan darbari June 3, 2016 14:56
Dear chpjz0391

Quote:
Dear bijian,
The reactingparcelFoam cannot simulate incompressible fluid and the collision between particles . And the DOMFoam cannot solve the dilute phase I think.
yes, you are right. "reactingparcelfoam" is a compressible solver but if you set a constant density ( don't vary with temperature ). this solver can be incompressible.

the "dpmfoam" can solve flow with high concentration of particles but I think there is not any problem with dilute flow of particles.

both "reactingparcelfoam" and "dpmfoam" use the same particle track class and the difference is submodels and eulerian phase equations.

chpjz0391 June 3, 2016 19:30
Quote:
Originally Posted by bijan darbari (Post 603332)
Dear chpjz0391



yes, you are right. "reactingparcelfoam" is a compressible solver but if you set a constant density ( don't vary with temperature ). this solver can be incompressible.

the "dpmfoam" can solve flow with high concentration of particles but I think there is not any problem with dilute flow of particles.

both "reactingparcelfoam" and "dpmfoam" use the same particle track class and the difference is submodels and eulerian phase equations.
Dear Bijian,
Thanks for your reply. I will use the DPMForm to simulate the dilute particle phase and then compare the result with the reactingparcelFoam .


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