Flow induced by an impeller in an unbaffled tank—II. Numerical modelling

Experimental data for the flow induced by an impeller in a cylindrical tank were presented and analyzed in Part I (Dong ., 1994, Chem. Engng Sci. 49, 549–560). In Part II, a Coriolis computer model is developed and employed to predict flow characteristics in a 3D calculation in conjunction with the...

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Bibliographic Details
Published inChemical engineering science Vol. 49; no. 20; pp. 3511 - 3518
Main Authors Dong, L., Johansen, S.T., Engh, T.A.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 1994
Elsevier
Subjects
Applied sciences
Chemical engineering
Exact sciences and technology
Mixing
Gas liquid
Agitation
Three dimensional model
Turbulent flow
Medium speed
Theoretical study
Turbulence energy
Hydrodynamics
Numerical simulation
Flow field
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Summary:Experimental data for the flow induced by an impeller in a cylindrical tank were presented and analyzed in Part I (Dong ., 1994, Chem. Engng Sci. 49, 549–560). In Part II, a Coriolis computer model is developed and employed to predict flow characteristics in a 3D calculation in conjunction with the standard k-ε turbulence model. The computer model involves a coordinate transformation in which the computational coordinates rotate with the impeller, allowing the impeller to be treated as a stationary blade in a rotating tank. Mean velocities and turbulent energy in the bulk liquid predicted by the computer model are observed to be in satisfactory agreement with the measurements. The main discrepancies between the prediction and the experimental data are analyzed.
ISSN:0009-2509
1873-4405
DOI:10.1016/0009-2509(94)00150-2