This tutorial's purpose was to demonstrate rebound off an internal
cyclic patch, and thereby "filter" the particles out of the downstream
sections of the geometry. The case does not correctly do this. The patch
interaction handling is incomplete and does not support overriding
cyclic boundary conditions in this way. This tutorial has therefore been
removed pending funding to improve the patch interaction modelling.
Resolves bug report https://bugs.openfoam.org/view.php?id=3923
9a4bcbf7f4