6533b835fe1ef96bd129fb73

RESEARCH PRODUCT

Vortex shape in unbaffled stirred vessels: experimental study via digital image analysis

A BusciglioMl DavìFranco GrisafiFrancesca ScargialiAlberto Brucato

subject

lcsh:Computer engineering. Computer hardwareSettore ING-IND/25 - Impianti Chimicidigital image analysilcsh:TP155-156bioreactorslcsh:TK7885-7895surface vortexComputingMethodologies_DOCUMENTANDTEXTPROCESSINGunbuffled stirred vesselUNBAFFLED STIRRED VESSELSlcsh:Chemical engineeringunbuffled stirred vessels; surface vortex; bioreactorsFree-surface vorticeComputingMilieux_MISCELLANEOUSComputingMethodologies_COMPUTERGRAPHICS

description

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.

10.3303/cet1124232http://hdl.handle.net/10447/61833