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

Figure 4

Velocity distributions of pebbles at different positions of the bed with funnel angle of 30° and particle number ratio 𝑁_𝑓∶𝑁_𝑔 = 2 : 3.

(a) Vertical velocity distribution at upper region

(b) Vertical velocity distribution at lower region

(c) Vertical velocity distribution at cone region

(d) Horizontal velocity distribution at upper region

(e) Horizontal velocity distribution at lower region

(f) Horizontal velocity distribution at cone region