One-way CFDEM coupling

Submitted by AndresMM on Thu, 11/23/2017 - 18:24

Hi everyone,

what would be the best way to carry out a one way couple simulation in which the particles "feel" the flow, but the flow is unafected by the particles?

Would setting alphamin to 1 achieve this correctly?

paul | Mon, 11/27/2017 - 16:51

You can achieve the same by setting KslLimit to 0 in implicitCoupleProps, although Alexanders approach would be slightly faster.

Greetings,
Paul

neniu's picture

neniu | Thu, 03/25/2021 - 16:03

The correct way to do this is to use the noDrag model to discard forces on the CFD side only.
This is also what the approach suggested by Alexander does in the end.

The approach suggested by paul will also affect the forces acting on the particles and might, therefore, not lead to a real one-way coupling.

Martin Niemann, DCS Computing