Micro Particles Problem in EDEM

Mostafa Jafari Gildeh_21173
Mostafa Jafari Gildeh_21173 Altair Community Member
edited December 14 in Community Q&A
Screenshot 2024-12-14 165202.png

Hi,

For creating a particle and calculating its properties, when the radius of the particle is 1 micro meter, the properties that I get are shown in red. What does this mean?

Does it mean that the software cannot handle this length scale? Because in one of my simulations the box that I created to hit the particles move past them like a ghost.

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Answers

  • PrasadAvilala
    PrasadAvilala
    Altair Employee

    Hi Mostafa Jafari,

    No need to worry about the red color, this is just giving alarm to the user about, are they entering correct size and distribution. In terms of physics absolutely no limitation when it comes to the particle size. EDEM supports double precision hence the particle size also supported in that scale.

    Thanks,

    Prasad A

  • Mostafa Jafari Gildeh_21173
    Mostafa Jafari Gildeh_21173 Altair Community Member
    https://community.altair.com/discussion/comment/188086#Comment_188086

    OK. But in one of my simulations, I had particles with the radius of 1 micron, and a moving box was supposed to hit them, but it passed through the particles like a ghost. For bigger particles I did not have this issue.

  • Stephen Cole
    Stephen Cole
    Altair Employee

    Hi,

    We wouldn't expect to see any issues, can you confirm if any contacts are detected, do you see different results with smaller time-step values?

    Regards

    Stephen

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