The completation of DEM and fluid coupling in SPH formulation

edited January 25 in DualSPHysics_v4.3_Beta
Hi guys:
I have a question on the interaction computing between fluid and DEM bodies.
In DualSPHysics we can find some codes about DEM such as the interactiong force computing. I want to know how to achieve the force computation.
I think the process like this:
1/ I generate a floating of sphere in .xml file
2/ The DEM foating sphere is discretized to many SPH particles based on the position and radius information.
3/make the SPH interpolation between the fluid particles and floating particles(DEM) to compute the acceleration and forces

I am not confirm if I am right. So could someone can make a explaination for me.
All regards
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