How to release the particles from the bottom and create periodicity?

Hi

Please enable the periodic boundary conditions in the X direction. You can find it in Environment→Boundary Conditions.

Please ensure that you enable 'Remove Domain Gap for Periodic Boundaries'.

Hope this helps.

Thanks,
Jerrin Job

Thanks.
I have set mass flow rate at the top of the domain and there is continuous generation of particles. I also set the periodic boundary condition and enabled 'Remove Domain Gap for Periodic Boundaries'.

The issue is particles are not flowing in a packed manner. To resolve this, I need to control the particle velocity going out from the outlet. How can I do that?

If udf needs to set at the outlet, please guide me with the steps.

I have attached the file. Can you please check?

Hi SROY,

Also, please update gravity direction in your file. The gravity direction currently in Negative Z-axis this kind of problem its very important.

Also, Solid geometry is not required in this case, the surface with which particles are in contact is good enough i.e the inner surface

The reason for particles not re-occuring at top due to perodic boundary is the way particles are generated i.e total number definition in number of particles and generation is defined using mass equation.

Define total number of particle as total mass so that the particle generation is in consistent format. I hope with this changes model should work fine.

Thanks,

Prasad A

Thank you.

Below attached is the stacking of particles. I want to just release them with constant velocity along with cyclic boundary condition. Can you help me with the approach of controlling velocity of particle bed?

https://drive.google.com/file/d/1icA37q7Q2X5VBcENmRnK4zrwiZu9JSCb/view?usp=sharing

My doubt is how to control velocity of particles under cyclic condition keeping the moving bed of particles packed? @Stephen Cole