  We introduce a framework to justify hydrodynamic limits of the
Vlasov-Navier-Stokes system. We specifically study high friction regimes, which
take into account the fact that particles of the dispersed phase are light
(resp. small) compared to the fluid part, and lead to the derivation of
Transport-Navier-Stokes (resp. Inhomogeneous Navier-Stokes) systems.
