EDEM fundamentals

Kiran Purushothama Keshavan

Hi,

I'm new to EDEM & I've gone through a few tutorials and I wonder if I can simulate flow of wind over particles.
For this I know coupling EDEM with fluent is possible but I'd like to see if EDEM alone has similar features to that of coupling.
In particular I'd like to know if EDEM is able to solve for cases which involve particle's interaction with ambient air, particle particle heat transfer & wind interactions between particles and the fluid medium.

Also where can I read the DEM theory (including equations) when it comes to DEM solver in EDEM.

Thanks in advance!

 

Mahdi_22303

If you have a constant flow field like only velocity in x direction which is a fixed constant, you can give that velocity inside the EDEM, and then it calculates the drag force on the particles using that fixed flow field. If your bed of particles deform and need to see how the flow field changes with that deformation, you must couple it with a CFD solver as well. 

Kiran Purushothama Keshavan

Can you please point out to resources to how I can add a velocity component (something like wind blowing from one end to the other) on to a bunch of particles which are falling from a height in EDEM?

Assume a few particles are falling from a conveyor to a bin, does EDEM assume there's no interaction of particles with the surrounding atmosphere?
What about adding heat transfer on particles in a bin from the sides of the bin wall.?

Kiran Purushothama Keshavan

Also when should one decide to couple EDEM with Fluent?
I see that there are a few tutorials on heat transfer and initialising velocity field over particles.

Stephen Cole

Kiran_20874 said:

Also when should one decide to couple EDEM with Fluent?
I see that there are a few tutorials on heat transfer and initialising velocity field over particles.

Hi Kiran,

There is the field data coupling Mahdi mentions:

https://2022.help.altair.com/2022.2/EDEM/Creator/Physics/Field_Data_Manager/Field_Data_Manager.htm

or also you can consider EDEM-AcuSolve (or another CFD solver)

EDEM AcuSolve tutorial

Introduction to AcuSolve Computational Fluid Dynamics - EDEM coupling

By default EDEM doesn't consider any particle interaction with the surrounding atmosphere or heat transfer.  With the field data you can include it if the fluid affects the particle motion but the particles don't affect the flow field, typically very dilute cases where the particle volume fraction is less than 1%.

 

CFD-DEM coupling is required when particles influence fluid motion and the fluid also influences the particle motion. 

You can add heat transfer in EDEM alone, tutorial below.  Or for coupled EDEM-AcuSolve there is a tutorial which you can find via the link above. 

EDEM Tutorial 7: Heat Transfer

Regards

Stephen