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Granular Temperature in Bubbling Fluidized Beds
Author(s) -
Huang X.,
Liu Z.
Publication year - 2008
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200800112
Subject(s) - fluidization , mechanics , energy balance , fluidized bed , phase (matter) , thermal , computation , thermodynamics , volume (thermodynamics) , materials science , chemistry , physics , mathematics , organic chemistry , algorithm
In the CFD simulation of industrial‐scale bubbling fluidized beds, coarse grids are necessary due to limited computation resources, which creates a problem about how to characterize the effect of meso‐scale bubbling structures on the particulate phase stresses and inter‐phase interaction force. In this paper, the two‐phase theory of bubbling fluidization is applied in the analysis of the fluctuation characteristics of solid volume fractions and then it was used to establish a simple model for granular temperature in bubbling fluidized beds, which is based on the local pseudo‐thermal energy balance. It was shown that the granular temperature obtained experimentally is well predicted by the present model.