Figure 4
From: Bubbling behavior of a fluidized bed of fine particles caused by vibration-induced air inflow
Measurement of the air pressure in the powder bed.
(a) Top view of the measurement positions and directions, i.e., θ = 0, π/2, π and 3π/2 rad. The broken lines indicate the zones of upward flow with bubbling and the zones of downward flow. The air pressure is measured at multiple positions, including the bubbling zone near the tube wall. (b) Distribution of the air pressure in the vertical direction when the vibrator is attached 100 mm from the bottom end of the glass tube.
