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Three‐Dimension imaging of particle clusters in dilute gas—solid suspension flow
Author(s) -
Tsukada M.,
Ito M.,
Kamiya H.,
Horio M.
Publication year - 1997
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.5450750222
Subject(s) - fluidization , suspension (topology) , turbulence , mechanics , materials science , flow (mathematics) , particle (ecology) , circulation (fluid dynamics) , jet (fluid) , core (optical fiber) , fluidized bed , thermodynamics , composite material , physics , geology , mathematics , homotopy , pure mathematics , oceanography
The three dimensional flow structure of dilute gas—solid suspensions in a small‐scale circulating fluidized bed (0.200 m riser diameter) was visualized by applying the laser sheet technique. FCC particles were fluidized with sustained solid loading at gas velocities corresponding to the turbulent and the fast fluidization regimes in cases where the solid circulation was sufficient. Three typical shapes of clusters in the core section of the riser were observed. Clusters characterized by a paraboloidal shape heading downward were connected to neighboring clusters at their tail part, forming a three dimensional network structure.