Determination of mixing time by colourimetric diagnosis?Application to a new mixing system
| Autor: | J.-C. Leuliet, Guillaume Delaplace, A. Moreau, L. Bouvier, R. Guerin |
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| Přispěvatelé: | Laboratoire de Génie des Procédés et Technologie Alimentaires (LGPTA), Institut National de la Recherche Agronomique (INRA) |
| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: |
Flow visualization
Computer science [SDV]Life Sciences [q-bio] Viscous Fluid Computational Mechanics General Physics and Astronomy 02 engineering and technology Image Analysis Technique Agitator Digital image Impeller Optics 020401 chemical engineering [SDV.IDA]Life Sciences [q-bio]/Food engineering Fluid dynamics [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering 0204 chemical engineering Process engineering Thymol Blue Mixing (physics) Fluid Flow and Transfer Processes Commercial software business.industry Homogeneity (statistics) 021001 nanoscience & nanotechnology Homogenization Performance Mechanics of Materials Viscous Medium 0210 nano-technology business |
| Zdroj: | Experiments in Fluids Experiments in Fluids, Springer Verlag (Germany), 2004, 36 (3), pp.437-443. ⟨10.1007/s00348-003-0741-7⟩ |
| ISSN: | 0723-4864 1432-1114 |
| DOI: | 10.1007/s00348-003-0741-7⟩ |
| Popis: | International audience; A method for determining mixing times in a transparent stirred vessel for highly viscous fluids has been developed. The method involves a chemical decolourization with two acid-base indicators and a colourimetric diagnosis of digital images, deduced from a video captured during the mixing process. The advantages of the method developed are:(1) there is no disturbance of the fluid flow, and (2) measuring and determination of the degree of homogeneity is relatively effortless and cheap since it requires only a standard colour camera and commercial software for digital image analysis. This paper describes protocols for carrying this method out. In addition, examples of experimental results obtained for a standard impeller (of the helical ribbon agitator type) and a new piece of mixing equipment are given and discussed. |
| Databáze: | OpenAIRE |
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