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Old   April 5, 2015, 15:31
Default Lagrangian particle Track
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iman vasefi
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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
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Old   June 2, 2016, 21:39
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Ping Chang
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Quote:
Originally Posted by elah599 View Post
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.
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Old   June 3, 2016, 01:46
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Bijan Darbari
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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!
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Old   June 3, 2016, 07:35
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Evangelos
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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 View Post
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!
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Old   June 3, 2016, 12:46
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Ping Chang
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Quote:
Originally Posted by bijan darbari View Post
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.
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Old   June 3, 2016, 14:56
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Bijan Darbari
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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.
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Old   June 3, 2016, 19:30
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Ping Chang
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Quote:
Originally Posted by bijan darbari View Post
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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