Premium
High‐velocity fluidization of solid particles in a liquid‐solid circulating fluidized bed system
Author(s) -
Kuramoto Koji,
Tsutsumi Atsushi,
Chiba Tadatoshi
Publication year - 1999
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450770214
Subject(s) - fluidization , fluidized bed , mechanics , materials science , thermodynamics , convection , heat transfer , chaotic , fluidized bed combustion , entropy (arrow of time) , physics , artificial intelligence , computer science
Particulate and aggregative fluidizations in a liquid‐solid circulating fluidized bed system are characterized by chaotic time series analysis of local voidage and heat transfer fluctuations in terms of the correlation dimension and Kolmogorov entropy. Both correlation dimension and Komogorov entropy of the voidate fluctuation are found to decrease with decreasing bed voidage in both fluidization regimes, suggesting the suppression of chaotic motion of individual particles due to high solid concentration. The correlation dimension of the heat transfer fluctation in the aggregative fluidization regime is higher than that in the particulate fluidization regime. This reflects the complex convective motion of liquid and solid phases induced by the formation of the liquid streaks and aggregates of particles.