ESyS-Particle

Basic questions

Asked by Anton Gladky

Dear Sir or Madame,

I am interested in performing some simulations with DE method.This concerns cylindrical particles falling from a top of a tube and being randomly packed. Since ESyS works with spheres i will have to pack spheres in a cylindrical geometry where they will be bonded. Do you think that i will be able to insert gravity forces , resistance from the air,friction etc to the cylinders (while the spheres use the bonded interactions) and maybe to take the coordinates of every contact point between the cylinders. At the moment i haven t installed the programme , i ve just read the tutorial for ESyS and I can say that I am not so experienced with programming languages. Do you think that i should first become familiar with Python and then try to implement the model to ESyS?
Could i also use another programme for generating a mesh file than the one you propose or it is not compatible?

Thank you very much for your time and i apologize for the immature questions as I am a beginner with DEM.

Sincerely,

Futzi
Undergraduated student
National Technical University of Athens

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ESyS-Particle Edit question
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Solved by:
SteffenAbe
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SteffenAbe (s-abe) said : 		#1

Looks strange. Could you post the full script (incl. particle size parameters) to me so I can test it here?

Steffen

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Best SteffenAbe (s-abe) said : 		#2

Found the problem:
The "origin" of the CylinderVol isn't the center of the bottom circle (i.e. (0,0,0) in your case) but the center of the cylinder volume (i.e. half way up the cylinder axis). So if you want a cylinder standing on the y=0 plane the origin needs to be at (0, length/2,0).
The filling problem you saw actually resulted from the MNTable not fully covering the cylinder volume.

Steffen

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Anton Gladky (gladky-anton) said : 		#3

Thanks SteffenAbe, that solved my question.