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Titolo:
TURBULENCE IN STIRRED TANKS - ANISOTROPIC, APPROXIMATE, AND APPLIED
Autore:
KRESTA S;
Indirizzi:
UNIV ALBERTA,DEPT CHEM & MAT ENGN EDMONTON AB T6G 2G6 CANADA
Titolo Testata:
Canadian journal of chemical engineering
fascicolo: 3, volume: 76, anno: 1998,
pagine: 563 - 576
SICI:
0008-4034(1998)76:3<563:TIST-A>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENERGY-DISSIPATION RATE; PITCHED BLADE TURBINE; SHEAR-INDUCED FLOCCULATION; LASER-DOPPLER MEASUREMENTS; BAFFLED VESSEL; FLOW PARAMETERS; IMPELLER; REACTORS; FIELD; DISPERSION;
Keywords:
TURBULENT MIXING; LIQUID-LIQUID DISPERSION; REACTOR DESIGN; CELL DAMAGE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
62
Recensione:
Indirizzi per estratti:
Citazione:
S. Kresta, "TURBULENCE IN STIRRED TANKS - ANISOTROPIC, APPROXIMATE, AND APPLIED", Canadian journal of chemical engineering, 76(3), 1998, pp. 563-576

Abstract

Over the last ten years, many ways of characterizing the turbulence in stirred tanks have been proposed, and the importance of the local rate of dissipation of turbulent kinetic energy (epsilon) to various processes has been clarified. In this paper, our understanding of the role of epsilon is examined for the blend time of miscible fluids, for drop break-up, for reactor design, for cell damage in bioreactors, for gas dispersion, for crystallization, and for flocculation and coagulation. The conceptual difficulties inherent in approximate measurements of epsilon are discussed with examples and background theory. Particular attention is paid to the various length and time scales present in the tank, the anisotropic nature of the flow field, and the effect of organized structures on turbulence measurements. Progress in the area over the last ten years is reviewed in the context of these limitations.

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Documento generato il 20/10/20 alle ore 05:32:09