ESyS-Particle

Particles flying high

Asked by Toketo

Hello guys!

In my simulation, it was okay, it followed what flow I wanted to see but there is a little problem. In some snapshot, some particles would fly so high. it's not that much, just about 2-3 particles.

From the tutorial, the contact modulus is 10,000 N/m. I wanted to have the mass into grams and length in mm. So the contact modulus would be around 10,000,000. The density would be 1602x10^-6. Could it be possible that some particles would fly because the contact modulus is so big?

Thanks!

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Launchpad Janitor (janitor) said : 		#1

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

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Dion Weatherley (d-weatherley) said : 		#2

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Dion Weatherley (d-weatherley) said : 		#3

Hi Toketo,

Unexpected motions of particles (particularly if they are some of the smallest particles) is often indicative of a timestep increment that is a bit too high. Try reducing your timestep increment by a factor of ten in this instance.

Cheers,

Dion

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