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Newtonian power curve and drop size distributions for vibromixers

Lo, MYA; Gierczycki, AT; Titchener-Hooker, NJ; Shamlou, PA; (1998) Newtonian power curve and drop size distributions for vibromixers. CAN J CHEM ENG , 76 (3) 471 - 478.

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Abstract

Power input data are presented for a twin flat disk up-and-down moving (vibromixer) impeller operating in a small vessel with a range of Newtonian Liquids. Vibromixer power number and Reynolds number are defined and are used to establish the Newtonian power curve for this type of mixer. Drop size distributions are presented for xylene-in-water dispersions under turbulent flow conditions in the vibromixer and are shown to vary with the maximum velocity of the disk (2 pi Af). The Sauter mean drop diameter of the distribution is related to the vibromixer Weber number, (We = rho(2 pi Af)D-2/sigma), by an equation of the type d(32)/D = C (We)(-3/5) with the coefficient C = 0.37.

Type: Article
Title: Newtonian power curve and drop size distributions for vibromixers
Keywords: up-and-down moving impellers, power curves, drop size distribution, PULSED BAFFLED BIOREACTOR, MASS-TRANSFER, EMULSIONS, YEAST, FLOW
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Engineering Science Faculty Office
URI: http://discovery.ucl.ac.uk/id/eprint/77774
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