1. Vortex shape in unbaffled stirred vessels: experimental study via digital image analysis
- Author
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Busciglio, A, Davì, ML, GRISAFI, Franco, SCARGIALI, Francesca, BRUCATO, Alberto, Busciglio A., Grisafi F., Scargiali F., Daví M.L., Brucato A., Busciglio, A, Grisafi, F, Scargiali, F, Davì, ML, and Brucato, A
- Subjects
lcsh:Computer engineering. Computer hardware ,Settore ING-IND/25 - Impianti Chimici ,digital image analysi ,lcsh:TP155-156 ,bioreactors ,lcsh:TK7885-7895 ,surface vortex ,ComputingMethodologies_DOCUMENTANDTEXTPROCESSING ,unbuffled stirred vessel ,UNBAFFLED STIRRED VESSELS ,lcsh:Chemical engineering ,unbuffled stirred vessels ,Free-surface vortice ,ComputingMilieux_MISCELLANEOUS ,ComputingMethodologies_COMPUTERGRAPHICS - Abstract
There is a growing interest in using unbaffled stirred tanks for addressing certain processing needs. In this work, digital image analysis coupled with a suitable shadowgraphy-based technique is used to investigate the shape of the free-surface vortex that forms in uncovered unbaffled stirred tanks. The technique is based on back-lighting the vessel and suitably averaging vortex shape over time. Impeller clearance from vessel bottom and tank filling level are varied to investigate their influence on vortex shape. A correlation is finally proposed to fully describe vortex shape also when the vortex encompasses the impeller.
- Published
- 2011