API: multiple-fields, doesn't the one-way transient coupling with edem-acslover use the same formula algorithm?

bigshow
bigshow Altair Community Member
edited August 23 in Community Q&A

API: multiple-fields, doesn't the one-way transient coupling with edem-acslover use the same formula algorithm? I used two methods for coupling, and the results were very different.

https://community.altair.com/community/en/edem-api-particle-body-force-field-data-coupling-multiple-fields-cuda?id=kb_article&sysparm_article=KB0122032

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  • jerrinjobs
    jerrinjobs
    Altair Employee
    edited August 22

    Hi xixihaha

    In principle, it is the same. However, with a unidirectional coupling, the drag forces are calculated by AcuSolve and with the field coupling, the drag forces are calculated by EDEM. Are you using the same drag models in both cases?

    Also, AcuSolve has a new field at every CFD timestep which is then used to calculate the appropriate drag forces. With field coupling, if your field frequency is lesser than that of AcuSolve, then you may see differences because of that also.

    Hope this helps.

    Thanks,
    Jerrin Job

  • bigshow
    bigshow Altair Community Member
    edited August 23
    Jerrin Job Sibychan said:

    Hi xixihaha

    In principle, it is the same. However, with a unidirectional coupling, the drag forces are calculated by AcuSolve and with the field coupling, the drag forces are calculated by EDEM. Are you using the same drag models in both cases?

    Also, AcuSolve has a new field at every CFD timestep which is then used to calculate the appropriate drag forces. With field coupling, if your field frequency is lesser than that of AcuSolve, then you may see differences because of that also.

    Hope this helps.

    Thanks,
    Jerrin Job

    Thank you very much, I will double check

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