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Local energy dissipation in agitated turbulent fluids and its significance for the design of stirring equipment
Author(s) -
Laufhütte Hans Dietrich,
Mersmann Alfons
Publication year - 1987
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.270100108
Subject(s) - micromixing , continuous stirred tank reactor , dissipation , ideal (ethics) , turbulence , flow (mathematics) , thermodynamics , mechanics , continuous reactor , idealization , materials science , statistical physics , chemistry , process engineering , physics , catalysis , classical mechanics , engineering , organic chemistry , philosophy , epistemology , viscosity
Ideal flow conditions are generally assumed for the reactor design. If stoichiometry, reaction mechanism and kinetics are known, the balance equations for the ideal flow tube, the ideal steady‐state continuous stirred tank reactor or the ideal, completely mixed stirred batch reactor are often applied. In many cases, formal kinetics, which forms the basis of reaction modelling, is so uncertain that the idealization of the flow field can be accepted. In practice, however, deviations from the ideally calculated conversions, yields and product qualities, often occur. In these cases, it is necessary to consider the real flow conditions. In general, a distinction is made between macroand micromixing processes.