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[john Marshal <question706306@xxxxxxxxxxxxxxxxxxxxx>]

Question #706306 on Yade changed:
https://answers.launchpad.net/yade/+question/706306

john Marshal posted a new comment:
When using MPI (Message Passing Interface) to simulate a system with
spheres and a moving facet, you can use various approaches to make the
spheres interact with the facet. Here are a few possible methods:

Implement contact detection and response algorithms: You can program
your simulation to detect when a sphere is in contact with the moving
facet and apply the appropriate forces or constraints to simulate the
interaction. This may involve calculating the distance between the
sphere and the facet, computing the normal force, and updating the
velocity and position of the sphere.

Use collision detection libraries: There are various libraries available
that can perform collision detection and response between objects, such
as spheres and meshes. Some examples include Bullet, ODE, and PhysX. You
can use these libraries to detect when a sphere collides with the facet
and handle the response accordingly.

Divide the facet into small segments: Instead of treating the facet as a
single moving object, you can divide it into multiple smaller segments
or tiles. This can simplify the contact detection and response
algorithms, as each sphere only needs to interact with the tiles that it
is in contact with. This approach can also improve performance, as only
the relevant tiles need to be updated each time step.

Use parallel computing techniques: If you have a large number of spheres
or tiles, you may need to use parallel computing techniques to speed up
the simulation. MPI can be used to distribute the workload across
multiple processors or nodes, allowing you to simulate more spheres or
tiles simultaneously.

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