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Calculating the Porosity of Irregularly Shaped Particle Piles

Hi all,

My case involves CFD-DEM coupled analysis, mainly simulating particle backfilling into water during land reclamation. Under these conditions, the final shape of my particle pile is not rectangular or circular but rather irregular. Are there other methods to conveniently calculate the porosity of the particle pile? Currently, using the default rectangular geometry bin, the obtained voidage is 94.53%, which seems to include the volume of the empty (air) spaces. This differs from my expectation, as I only want to determine the porosity of the particle pile itself.

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HyperMesh CFD

Accepted answers

Stephen Cole

Hi, it is a relatively new feature that has been included. I would recommend using the 2024.1 (or 2025 once it's released) as there have been a few improvements in the analysis since it was first introduced in version 2022.1.

All comments

Stephen Cole

Hi,

You can look at using the Continuum Analysis tool for Porosity:

https://help.altair.com/EDEM/topics/edem_analyst/continuum_analysis_c.htm

Or if you place the bin so that it is inside the bed of material you can get a more accurate result there, however the Continuum analysis is probably the best option here.

Regards

Stephen

JIm1007

Hi Stephen,

Thank you for your reply. However, I couldn't find the Continuum Analysis in the analysis tree. Could it be because my version is too old? I am using EDEM 2022.0.

Stephen Cole

JIm1007

Hi, I see. Thank you very much!