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How to apply Body force from fluent

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

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

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v2022.3

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Stephen Cole

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

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

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

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

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)