Fig.7. Experiments using a tracer powder.
A - bed made of 30 g of Al2O3 (white) and 5 g of CuO (black)
B - bed aerated for 1 min without application of sound (u=0.46 cm/s)
C - bed aerated for 1 min in sound assisted fluidization
(u=0.46 cm/s, SPL=140 dB, f=120 Hz)
D - bed aerated for 5 min in sound assisted fluidization
(u=0.46 cm/s, SPL=140 dB, f=120 Hz)