EDEMpy example: Segregation index in drum mixer

Ambrish_Singh_27
Ambrish_Singh_27
Altair Employee
edited November 2023 in Altair Exchange

Overview

EDEMpy is a Python library for post-processing and analysis of EDEM simulation data and takes advantage of EDEMs hdf5 file structure. Using the library, it is easy to extract specific data from a simulation deck and process that data in a customizable and reusable way.

In this example the segregation index (SI = 2 -> No Mixing, SI = 1 -> Random Uniform Mixing, SI = 0 -> Perfect Mixing) is calculated for a drum mixer. A script is provided that calculates the segregation index for the mixer over time. image

Note: You must run the attached EDEM simulation deck before running “SegregationIndex-Time_Example.py”.

Further Readings

M. Marigo, D. L. Cairns, M. Davies, A. Ingram, and E. H. Stitt, “A numerical comparison of mixing efficiencies of solids in a cylindrical vessel subject to a range of motions,” Powder Technol., vol. 217, pp. 540–547, 2012, doi: 10.1016/j.powtec.2011.11.016. 

Usage/Installation Instructions

Once the EDEM simulation is complete, the python script file can be executed from the EDEM Analyst interface (File->Run EDEMpy script). The script will output the graph showing the variation in segregation index over the simulation time. These plots, labeled 'SegIndex', can be found in the same locations as the EDEM deck.

Tagged:

Comments

  • Alice Sun
    Alice Sun Altair Community Member
    edited January 30

    Could you please extend the above code (which calculates the Segregation index)  for other binary mixture of particles? I used the script on my own case and it showed errors. I tried to revise the code but couldn't do it.

    Also can I get the exact values of the segragation index? 

    Thanking you very much.

    Thanks & Regard

    Alice Wang

  • Community Guest
    Community Guest New Altair Community Member
    edited May 22

    how can i extract the data of particles axial position inside drum at each time step?

Categories