Particulate flows are found in many practical applications from geophysical flows (pyroclastic flow, sediments transport, volcano ashes dispersion, ...) to industrial applications (olefin polymerization, Fluid Catalytic Cracking, silo discharge, ...). The physical phenomena present are complex: transport by gas, inter-particle collisions, rebounds on the walls, heat transfer, or interactions due to electric field. Among these phenomena, the understanding and modeling of short- and long-range interaction forces, that have been long time neglected, is today a priority. Indeed, forces (electrostatic or van der Walls) seem to play an important role on the hydrodynamics of both dilute and dense gas-particle flows. For example, in dilute turbulent gas-particle flows non-uniform particle distributions can arise on a macroscopic scale as a result of static electrification, a phenomenon that affects the hydrodynamics considerably. Nevertheless, most of the modeling efforts for segregation and preferential concentration of particles have focused on hydrodynamic or gravity mechanisms, while electrostatics can have a considerable if not more significant effect. Therefore, a detailed model of the electrostatic interactions and high-fidelity numerical simulations of such flows are necessary in order to describe these phenomena more accurately and understand their underlying mechanisms.