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EDEM Polyhedral Particle

Hi,

I imported a custom polyhedral particle into EDEM 2024.1 through a stl file by using the "Import Custom Particle Shape" option. The normal size distribution option for generating the particles gives an option to scale the particles through "Radius".

Can you please confirm if this "Radius" is actually the largest dimension out of length x, y & z of the particle properties that are calculated.

Further, can you please confirm if the "Diameter" used to create the size distribution histogram is indeed the largest or major dimension out of length x, y & z of the particle.

Thanks and regards.

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Accepted answers

Stephen Cole

Hi Rahul,

Scale by 'radius' could also be termed as 'linear scaling'. If you choose this option it will scale all dimensions (x,y,z) equally by the amount specified. The shape will remain unchanged and the volume increased by (scaling_factor)^3.

If you chose scale by Volume it performs the same action, volume is increased by the scaling factor and this means x,y,z dimensions are all increased by (scaling_factor)^(1/3).

For the Diameter Attribute, if you create a box around the particle the diameter is the largest dimension of the box. This is seen in the Creator > Particle tab.

https://help.altair.com/edem/topics/appendix/attribute_definitions_c.htm?

Regards

Stephen

All comments

Stephen Cole

Hi Rahul,

If you chose scale by Volume it performs the same action, volume is increased by the scaling factor and this means x,y,z dimensions are all increased by (scaling_factor)^(1/3).

For the Diameter Attribute, if you create a box around the particle the diameter is the largest dimension of the box. This is seen in the Creator > Particle tab.

https://help.altair.com/edem/topics/appendix/attribute_definitions_c.htm?

Regards

Stephen

Rahul Sharma

Thanks for the confirmation.

Regards