Numerical Simulation of Particle Flow Motion in a Two-Dimensional Modular Pebble-Bed Reactor with Discrete Element Method

Figure 6

Vertical velocity distributions of pebbles at different number ratios.

(a) Vertical velocity distribution of pebbles with number ratio 30 : 40 : 30 at upper region

(b) Vertical velocity distribution of pebbles with number ratio 25 : 50 : 25 at upper region

(c) Vertical velocity distribution of pebbles with number ratio 30 : 40 : 30 at lower region

(d) Vertical velocity distribution of pebbles with number ratio 25 : 50 : 25 at lower region

(e) Vertical velocity distribution of pebbles with number ratio 30 : 40 :  30 at cone region

(f) Vertical velocity distribution of pebbles with number ratio 25 : 50 : 25 at cone region