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CFD Simulation of Solids Suspension in Mixing Vessels
Author(s) -
Kee Nicholas C. S.,
Tan Reginald B. H.
Publication year - 2002
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.5450800411
Subject(s) - impeller , suspension (topology) , mixing (physics) , computational fluid dynamics , mechanics , volume fraction , materials science , transient (computer programming) , volume (thermodynamics) , mechanical engineering , thermodynamics , engineering , computer science , composite material , physics , mathematics , quantum mechanics , homotopy , pure mathematics , operating system
Abstract A CFD approach for predicting minimum impeller speed ( N js ) to achieve complete off‐bottom solids suspension in mechanically‐agitated vessels is presented. The method is based on observing the simulated transient profiles of solids volume fraction for the layer of cells adjacent to the vessel floor and has been shown to be reliable and robust. Predicted N js values for typical impeller systems were compared with well‐known empirical correlations and good agreement was obtained.