Figure 5. Sample images of spherical LDPE particles
fluidization with a superficial gas velocity of (a)
1.4Umf, (b) 2.0 Umf,(c) 3.0
Umf, (d) 3.4 Umf, and overlay of 500
images of (e) 3.0 Umf and (f) 3.4 Umfcases with the red dashed rectangle showing the region of the particle
fountain.