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Dynamic break-up and drop formation from a liquid jet spun from a rotating orifice. Part 1

Dynamic break-up and drop formation from a liquid jet spun from a rotating orifice. Part 1: Experimental

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Authors

  • D. Wong
  • M. Simmons
  • A. King
  • S. Decent
  • E. Parau

Research units

Info

Original languageEnglish
Title of host publicationProceedings of the ASME/JSME Joint Fluids Engineering Conference
PublisherAmerican Society of Mechanical Engineers
Publication date2003
Pages363-369
Number of pages7
Volume2A
ISBN (Print)0791836975
DOIs
StatePublished

Abstract

The dynamics of the break-up of curved jets produced by the prilling process vere studied. The effects of liquid dynamic viscosity, rotation rate and orifice size upon the surface tension driven instabilities were investigated. Liquid dynamic viscosity was varied by using mixtures of glycerol and water which gave dynamic viscosities ranging from 0.001 to 0.081 Pa.s at 20°C. Over the range of experimental parameters studied, four different break-up modes were identified. For each mode, considerable differences in the break-up mechanism and in the drop size distributions produced were observed. Dimensional analysis has shown that the break-up modes can be predicted from a plot of Reynolds number against Weber number. The break-up mode observed is a strong function of viscosity and highly non-linear effects were observed with the most viscous solutions used. The effect of rotation rate on the jet break-up length was inconclusive from the experiment.

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