TY - JOUR
AU - Guardiola Soler, Jesús
AB - The use of free surface fluctuations in three‐dimensional (3‐D) fluidized bed dynamic characterization is addressed. This technique provides a noninvasive global measure of the quality of fluidization by measuring at one position in the bed. The well‐known effect of particle size on fluidized bed hydrodynamics was explored using a 3D fluidized bed operated with four different particle groups. The analytical methods used were mutual information functions, frequency, and state space analysis of time series collected from bed surface fluctuations. Turbulent, multiple, and noninteracting bubble flow patterns, occurring during bubble regimes, have been characterized. Kolmogorov entropy for the reconstructed attractor is very sensitive to the transition between fluidization regimes. Moreover, correlation dimension estimates ranging between 3 < D2 < 5 indicate apparent low‐dimensional dynamics. Additionally for larger particle groups, D2 reaches a value close to 3, indicating slow bubbling controlled by large bubbles before the transition between different bubble flow patterns takes place. Finally, particle size has been found to have strong influence on signal persistence. © 2004 American Institute of Chemical Engineers AIChE J, 50: 3060–3067, 2004
TI - Using free bed surface fluctuations in a 3‐D fluidized bed for dynamic characterization
JO - Aiche Journal
DO - 10.1002/aic.10131
DA - 2004-12-01
UR - https://www.deepdyve.com/lp/wiley/using-free-bed-surface-fluctuations-in-a-3-d-fluidized-bed-for-dynamic-uOfMeI10mo
SP - 3060
EP - 3067
VL - 50
IS - 12
DP - DeepDyve
ER -