Abstract
The absolute and differential pressure fluctuations in gas-solid fluidized beds have been analyzed by statistical and deterministic chaos methods. Linear low-density polyethylene (LLDPE) particles with a mean diameter of 1.23 mm were used as a fluidizing material. The statistical methods are composed of the mean, standard deviation, skewness and kurtosis, and the deterministic methods are composed of autocorrelation, mutual information function, pseudo-phase space and correlation dimension. The minimum slug velocity of LLDPE particles is found to be 0.34 m/s by using the statistical and deterministic methods. As slugs appear and grow with increasing gas velocity, pressure fluctuations in the fluidized bed of LLDPE are oscillated and more periodic.
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This paper is dedicated to Professor Dong Sup Doh on the occasion of his retirement from Korea University.
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Lee, S.H., Kim, S.D. & Park, S.H. Statistical and deterministic chaos analysis of pressure fluctuations in a fluidized bed of polymer powders. Korean J. Chem. Eng. 19, 1020–1025 (2002). https://doi.org/10.1007/BF02707227
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DOI: https://doi.org/10.1007/BF02707227