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Experimental measurements and simulation of mixing and chemical reaction in a stirred tank
Author(s) -
Zipp Robert P.,
Patterson Gary K.
Publication year - 1998
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.5450760338
Subject(s) - mixing (physics) , mechanics , reynolds number , turbulence , chemical reaction , closure (psychology) , flow (mathematics) , term (time) , thermodynamics , computer simulation , materials science , reaction rate , steady state (chemistry) , chemistry , physics , catalysis , economics , market economy , biochemistry , quantum mechanics
Effects of mixing on the rate of second‐order chemical reactions have been studied by measuring the time‐average degree of conversion at enough points in a steady‐state, continuous‐flow stirred reactor to provide comparisons with numerical simulations of the same reactions using a standard Reynolds‐averaged turbulence simulation code with an added closure. The reactants were introduced in widely separated feed streams in order to provide a difficult test for the measurements and simulations. Concentration and segregation measurements were made with two fluorescence based methods ‐ one remote and one using a fiber optic probe. The rates of mixing and reaction were simulated using the Corrsin mixing term and the Spalding segregation production term with the Paired‐Interaction reaction closure term.