How can I count number of particles with a specific velocity?

Fatemeh Hosseini_22198
Fatemeh Hosseini_22198 Altair Community Member
edited August 2023 in Community Q&A

Hello, everybody,

I tried two different approaches to determine the number of particles with a given velocity:

1. Try to display particles with a range that is constrained by their velocity. It displays the particles that I want , but I have no idea how to count how many there are.

2. I attempted to export the results and set a velocity range-based limit, however, when I select the number of particles, the specify range option is inactive.

Would you kindly advise me in this area?


Regards,
Fatemeh

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Answers

  • Stefan Pantaleev_21979
    Stefan Pantaleev_21979
    Altair Employee
    edited August 2023

    Hi Fatemeh,

    The number of particles in the system is fixed in a particular timestep so it cannot have a range.

    To count the particles within a velocity range you can export the particle velocity on a standard query and count the number of entries in Excel.

    image

    You can also plot a histogram of the particle velocity over a range, right click on the graph to export the data and sum the columns in excel.

    image

    You can also use EDEMpy and perform the calculation in Python:

    EDEMpy Introduction guide and tutorial : Mass inside mixer

    Best regards,

    Stefan

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