Gas-solid transport in a 0.0508 m pipe at various inclinations with and without electrostatics

The transport of solid particles by air through a 0.0508 m pipe was studied in vertical, horizontal, and 450 orientations. Through control of the air humidity, the effects of electrostatic charging was observed. Pressure drop and particle velocities were measured. Particles used included 79 μm, 125 μm, and 450 μm glass beads and 128 μm Plexiglas beads. Analysis of particle velocity, pressure drop fluctuation, electrostatic pressure drop, choking and saltation was performed. Visual observations of the flow patterns and behavior were made. A linear stability analysis for the three orientations was performed