Article ID Journal Published Year Pages File Type
159000 Chemical Engineering Science 2007 15 Pages PDF
Abstract

The dimension of interaction dynamics, d2int, is used to study the nonlinear interactions in a fluidized bed between the local bubble, “bulk” bed and particle dynamic components. The different timescales are obtained by a multi-resolution analysis based on the Hilbert–Huang Transform Method (HHTM). The state space analysis is used to study the time–space structure of the fluidized bed dynamics. A method for constructing Poincaré projections based on the join probability matrix computation is provided. The Kolmogorov entropy, K  , and the correlation dimension, D2D2, are used to compute the invariant properties of the corresponding attractor. It is concluded that the local bubble dynamics has chaotic features and is responsible for the determinism found in pressure fluctuation signals. It has been found that, as expected, the bubble component is the driver of the gas–solid fluidized bed hydrodynamics.

Related Topics
Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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