What happens when the interface is moving?
It depends on what exactly is meant by “moving”. preCICE currently only supports static meshes, i.e. the mesh coordinates cannot be changed during a simulation. A dissertation in progress will introduce support for dynamic meshes. Nevertheless, also with static meshes, one can treat moving geometries and moving meshes if the respective solver uses an Arbitrary-Lagrangian-Eulerian approach.
Moved from our FAQ on precice.org.