  The randomization effect of the two-way (particle-flow) interaction has been
studied and quantified using the notion of distributed chaos and the results of
numerical simulations and laboratory measurements. It is shown, in particular,
that an increase of such parameters as the particle volume fraction, particle
mass loading, and Stokes number results generally in stronger randomization of
the particle-laden flows. An important role of spontaneous breaking of the
local reflectional symmetry in the randomization of the particle-laden flows
has been also analyzed using relevant dynamical invariants.
