How to apply Body force from fluent

satri
satri Altair Community Member
edited March 4 in Community Q&A

This example is given here

https://community.altair.com/community/en/edem-tutorial-edem-fluent-heat-transfer-in-fluidized-bed?sys_kb_id=9849d9761b0120d4c4dfdbd9dc4bcbfb&id=kb_article_view&sysparm_rank=1&sysparm_tsqueryId=de496f59dbbe35d4cfd5f6a4e296191e

shows how to do get the coupling to work between EDEM-Fluent. 

In this model the body force applied is due to difference in temperature for the particles.

Suppose i want to apply the body force of aerodynamic drag from fluent instead of using the in built models of altair such as Alexander-Morsi drag. what should i do?

My objective is i have a chain hanging from a ceiling and i want to blow air from the left side. This blowing of air is going to be done in fluent by specifying the inlet and outlet

image

how should i take the flow field value from fluent to EDEM using the coupling?

Tagged:

Answers

  • Stephen Cole
    Stephen Cole
    Altair Employee
    edited November 2023

    Hi Shyam,


    To confirm are you interested in 1-way or 2-way coupling?  

    For the 2-way coupling (shown in this example EDEM Tutorial: EDEM-Fluent: Heat Transfer in Fluidized Bed) would be best to contact Fluent support for modifying the drag laws.  

    However if it's 1-way then you can export a CGNS file or .txt file of the flow field and import it as per this tutorial 

    EDEM Tutorial 18: Lift and Drag Models

    and you can write your own drag models in the EDEM API, for use with the Field Data coupling:

    EDEM API Tutorial 4: Field Data Coupling

    Regards

    Stephen

  • satri
    satri Altair Community Member
    edited November 2023

    I want to do two-way coupling this time.

    I am able to do 1 way coupling with cgns (Tutorial 4) and the in-built models of DEM (lift-drag) (Tutorial 18).

    But, this time i want ansys to compute the flow field to be computed inside ansys and at the end of every time step dem should take that value of the flow field as body force. 

  • satri
    satri Altair Community Member
    edited November 2023

    https://community.altair.com/community/en/edem-tutorial-edem-fluent-heat-transfer-in-fluidized-bed?sys_kb_id=9849d9761b0120d4c4dfdbd9dc4bcbfb&id=kb_article_view&sysparm_rank=1&sysparm_tsqueryId=de496f59dbbe35d4cfd5f6a4e296191e

    this example from Altair website shows how to do that by considering temperature. I don't want to use temperature as a custom property rather in EDEM i want to pull the information of the field in every time step by writing the API. How will i access the ansys coupled flow field value inside EDEM API? is there any example that shows me that? Please let me know.

  • Kiran Purushothama Keshavan
    Kiran Purushothama Keshavan Altair Community Member
    edited March 4

    Hey, I do not have an answer to your question but it would be great if we got in touch with each other because I'm trying to setup a coupled CFD with DEM simulation.

    My email ID is kiran.purushothamakeshavan@ontariotechu.net

     

  • satri
    satri Altair Community Member
    edited March 4
    Kiran Purushothama Keshavan said:

    Hey, I do not have an answer to your question but it would be great if we got in touch with each other because I'm trying to setup a coupled CFD with DEM simulation.

    My email ID is kiran.purushothamakeshavan@ontariotechu.net

     

    Hi Kiran

    Please check your email. I would be happy to discuss more about this and get more understanding. 

    You should receive an email from satri@ncsu.edu (Please check your spam folder if you have not received the message)

Categories