Discrete element modeling of electrostatic charging of polyethylene powder particles

The effect of cohesion on the discharge of a granular material through the orifice of a silo

“…In particular, one difficulty lies in the understanding of the cohesion force between the particles. For very small particles (typically below 10 µm in diameter), attractive forces like Van der Walls [3] or electrostatic forces [4] are dominant whereas for larger particles, humidity brings the necessary amount of water to build strong liquid bridges between particles and therefore creates a bulk cohesion [5]. In industrial or geophysical situations, the cohesion force between grains may evolve due to the variation of the environment (confinement pressure, change of temperature, change of humidity rate) or due to the micro-mechanical evolution of the bonds (ageing, sintering, chemical reaction).…”

Computational analysis of triboelectrification due to aerodynamic powder dispersion

“…Indeed, all charging events, like particle-particle contact and particle-wall collisions, can be dynamically tracked and the transient loading process fully characterized. In the literature, such an approach has been used to model the contact charging during pneumatic conveying [18], in fluidized beds [19][20][21], in a periodic box [22] and pharmaceutical particle processing [23].…”

Electrostatic Charge Generated From Fabrics Sliding on Polymeric Materials

“…The conventional way to provide power for the electronics is to install batteries that have limited life. The replacement, management, and recycling of the huge number of batteries can represent high challenge, [2,4,5].…”