Did anyone succesfully conduct an FSI simulation using preCICE with an overset grid in OpenFOAM?
as far as I am aware, no one has yet. Theoretically it should be possible. preCICE only knows information about the coupled interface (coordinates of the vertices, values on the surface etc.). Whether there is some kind of grid overlap does not/should not concern preCICE. With most overset grid methods, there is a background mesh, and another mesh around an object that is at least a few cells “deep”. Essentially preCICE would only need to know about the interface points on the object, which should stay constant. As long as the only cells that are altered are the ones far away from the interface, then that should be fine.