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Particulate fluidization and sedimentation of spheres
Author(s) -
Loeffler A. L.,
Ruth B. F.
Publication year - 1959
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690050312
Subject(s) - laminar flow , particulates , fluidization , reynolds number , spheres , sedimentation , materials science , turbulence , porosity , range (aeronautics) , mechanics , thermodynamics , composite material , chemistry , geology , physics , sediment , fluidized bed , geomorphology , organic chemistry , astronomy
Particulate fluidization and sedimentation data were taken over the Reynolds number range of 0.005 to 1,800 by means of glass spheres in both water and ethylene glycol. Porosities for each series of measurements varied from about 0.50 to 0.91 and larger. The closely sized samples of spheres used were obtained by grinding between glass plates. The data for Reynolds numbers up to about 0.5 are in excellent agreement with the laminar theory of Ruth and the porosity function from Ruth's theory gave a satisfactory correlation of all the data, both laminar and turbulent.