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Multifunctional, three-dimensional tomography for analysis of eletrectrohydrodynamic jetting

  • Sungkyunkwan University

Research output: Contribution to journalArticlepeer-review

Abstract

A three-dimensional optical tomography technique was developed to reconstruct three-dimensional objects using a set of two-dimensional shadowgraphic images and normal gray images. From three high-speed cameras, which were positioned at an offset angle of 45° between each other, number, size, and location of electrohydrodynamic jets with respect to the nozzle position were analyzed using shadowgraphic tomography employing multiplicative algebraic reconstruction technique (MART). Additionally, a flow field inside a cone-shaped liquid (Taylor cone) induced under an electric field was observed using a simultaneous multiplicative algebraic reconstruction technique (SMART), a tomographic method for reconstructing light intensities of particles, combined with three-dimensional cross-correlation. Various velocity fields of circulating flows inside the cone-shaped liquid caused by various physico-chemical properties of liquid were also investigated.

Original languageEnglish
Pages (from-to)235-243
Number of pages9
JournalOptics and Lasers in Engineering
Volume68
DOIs
StatePublished - May 2015

Keywords

  • Circulating flow
  • Cone jet
  • Electrohydrodynamic jetting
  • Shadowgraphic image
  • Tomography

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