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sand ripples simulation

Posted 14 janv. 2014, 12:00 UTC−5 Charged Particle Tracing, Computational Fluid Dynamics (CFD), Particle Tracing for Fluid Flow, Geometry Version 4.4 5 Replies

Shayan Bigdeli
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Hi folks,

I am trying to simulate the formation and motion of sand ripples ( sand particles driven with wind). I think that this process may be considered as a two phase flow or a flow of a mixture of sand and air. Specifically, I need to simulate the collision of particles. I have tried particle tracing modules, but the particles do not hit each other- no collision is occurerred. I am also trying the Mixture Model, Laminar Flow Module, and just getting some errors.

I appreciate it if you could share with me your brilliant ideas to help me through the process.

Cheers,
Shayan
5 Replies Last Post 24 juil. 2014, 22:21 UTC−4
COMSOL Moderator

Hello Shayan Bigdeli

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If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

Bob Rooney
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Posted: 1 decade ago 19 mai 2014, 23:30 UTC−4
Shayan,

Did you figure out how to model particle-particle collision? I'm trying to do almost the same thing you are trying to do.
Shayan, Did you figure out how to model particle-particle collision? I'm trying to do almost the same thing you are trying to do.
Nathan T
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Posted: 1 decade ago 12 juin 2014, 07:20 UTC−4
I'm having the same problems. I've tried this in the MBD and the Particle tracing module and can't seem to get them to collide. they just pass through each other.
I'm having the same problems. I've tried this in the MBD and the Particle tracing module and can't seem to get them to collide. they just pass through each other.
Tianhang Bai
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Posted: 1 decade ago 20 juil. 2014, 21:21 UTC−4
Hello,

Does anyone know something about the particles collision simulation? The same problem. Thanks.

Albert
Hello, Does anyone know something about the particles collision simulation? The same problem. Thanks. Albert
Shayan Bigdeli
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Posted: 1 decade ago 24 juil. 2014, 22:20 UTC−4

Hello,

Does anyone know something about the particles collision simulation? The same problem. Thanks.

Albert


Hi there,

I've found a code which may work for particle collision simulation. I am not sure if I can mention its name here. So, please send me private msg for more details.

Thanks,
Shayan

[QUOTE] Hello, Does anyone know something about the particles collision simulation? The same problem. Thanks. Albert [/QUOTE] Hi there, I've found a code which may work for particle collision simulation. I am not sure if I can mention its name here. So, please send me private msg for more details. Thanks, Shayan
Shayan Bigdeli
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Posted: 1 decade ago 24 juil. 2014, 22:21 UTC−4

Hi folks,

I am trying to simulate the formation and motion of sand ripples ( sand particles driven with wind). I think that this process may be considered as a two phase flow or a flow of a mixture of sand and air. Specifically, I need to simulate the collision of particles. I have tried particle tracing modules, but the particles do not hit each other- no collision is occurerred. I am also trying the Mixture Model, Laminar Flow Module, and just getting some errors.

I appreciate it if you could share with me your brilliant ideas to help me through the process.

Cheers,
Shayan



Hi there,

I've found a code which may work for particle collision simulation. I am not sure if I can mention its name here. So, please send me private msg for more details.

Thanks,
Shayan
[QUOTE] Hi folks, I am trying to simulate the formation and motion of sand ripples ( sand particles driven with wind). I think that this process may be considered as a two phase flow or a flow of a mixture of sand and air. Specifically, I need to simulate the collision of particles. I have tried particle tracing modules, but the particles do not hit each other- no collision is occurerred. I am also trying the Mixture Model, Laminar Flow Module, and just getting some errors. I appreciate it if you could share with me your brilliant ideas to help me through the process. Cheers, Shayan [/QUOTE] Hi there, I've found a code which may work for particle collision simulation. I am not sure if I can mention its name here. So, please send me private msg for more details. Thanks, Shayan

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