CPFD simulation on angle of repose with hopper geometries and particle properties

Abstract

The dynamic angle of repose was simulated by computational particle fluid dynamics (CPFD) when particles were continuously falling. CPFD simulation variables were fitted by comparing the angle of repose with the experimental data and P s (particle normal stress) variance. Using a fitted simulation, the effect of hopper height (H h ) and hopper inlet diameter (D in ) on the angle of repose was investigated. As H h increased, the angle of repose decreased up to the height at which the particle velocity reached terminal velocity. Also, as D in /D hopper decreased, the descending area of the particle was increased, following an increase in the angle of repose from 11 to 53 . The design of a hopper based on the obtained results shows that the particle discharge rate of the hopper can be increased by about 2.5 times.

Preface to the special issue section in memory of John R. Grace

“…This special issue includes 18 papers spanning John's main interests in clean energy, [4][5][6][7][8] fluidization and fluidparticle systems, [9][10][11][12][13][14][15][16][17][18] and chemical engineering perspectives [19][20][21] but cannot fully capture his significance. Listing someone's professional work rarely reveals why they leave a unique hole or why those who had the good fortune to regard them as a colleague feel a strong sense of loss.…”