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Things to prep

General intro presentation

  • nicolin WG1 goal and objectives for the upcoming year with regards to all three sub-groups

Info for the hackathon

  • Problem 

    We will use a tumbling drum for our benchmark case as there should be experimental data from a number of groups along with it being simple enough that most codes can simulate. 

    For the DEM Model we will use Hertz Mindlin as done in this paper with appropriate YM and time-step values, https://www.sciencedirect.com/science/article/pii/S0010465523004113 

    1] We will have a case with moderate particle numbers that we will use to calibrate against experiment. 

    2] We will do an additional case with a larger number of particles in a range of millions to benchmark performance

    3] We will do a shape case using cubes as they are simple enough that most codes will have some representation for it. We aim to calibrate against experiment and will do a larger case as a performance study as in the case with spheres.

    What we measure

    The key metrics will be A] mixing index (same material, two colors)    B] power (summation of the dashpot and friction dissipation energies)   C]  profile outline.

    We aim to get post analysis scripts that people already have to compare between codes and to experiment. 

    The sub tracks

    The results from 1] will then be used for DEM UP and DEM ML to come up with a predictive model that you will get further communication on. 

    What we need to deliver

    Officially we need to have at-least two open source codes  Currently we have commitments for Yade and Mercury. 

    Beyond that any code that you want can be used as we aim to compare in a code agnostic manner.

    What we require

    A] Experiment data along with the configuration used.

    B] The code that you want to use and/or if you are willing to run cases. 

    C] If you can help with scripts for processing the results or have suggestions.

  • Split into two groups HPC and Alternative Methods (AI/ML, Surrogate models)

  • G1 - HPC by nicolin

    • What are the steps we need to take to achieve the benchmarking objective?

    • How to approach it and where to get started?

  • G2 - Alternative methods by Deepak Tunuguntla Hongyang Cheng

    • What are the steps we need to take to achieve the benchmarking objective?

    • How to approach it and where to get started?

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