  In this paper we numerically investigate the influence of dissipation during
particle collisions in an homogeneous turbulent velocity field by coupling a
discrete element method to a Lattice-Boltzmann simulation with spectral
forcing. We show that even at moderate particle volume fractions the influence
of dissipative collisions is important. We also investigate the transition from
a regime where the turbulent velocity field significantly influences the
spatial distribution of particles to a regime where the distribution is mainly
influenced by particle collisions.
