On the Question of Fluid-Like Fluidization Stability
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As reviewed in the previous chapter, there exists a class of fine powders which can be fluidized by a gas in a fluid-like regime and in the absence of macroscopic bubbles. A fundamental question still pending is whether this nonbubbling state can be really considered as a stable state. In spite that many experimental observations seem to deny this possibility, some theoretical works have been devoted to investigate the onset of bubbling in beds of solid particles fluidized by gas in a fluid-like regime by means of linear stability analyses.
KeywordsFroude Number Discrete Element Method Linear Stability Analysis Particle Volume Fraction Elastic Wave Velocity
- 1.Wallis, G.B.: One Dimensional Two-Phase Flow. McGraw-Hill, New York (1969) Google Scholar
- 7.Guazzelli, E.: Fluidized beds: From waves to bubbles. In: The Physics of Granular Media, p. 213. Wiley-VCH, Berlin (2004) Google Scholar
- 18.Kobayashi, T., Kawaguchi, T., Tanaka, T., Tsuji, Y.: Proc. of world congress on particle technology 4. In: CD-ROM. AIChE Conference Proceedings (2002) Google Scholar