Modeling of sessile droplet oscillation on electrohydrodynamic jetting nozzle at constant back pressure

Jungkeun Yang, Ho Kim, Baekhyun Cho, Jaewon Chung

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In this study, we present a theoretical model for an oscillating meniscus along with changing the volume of the sessile droplet on the electrohydrodynamic nozzle under various voltage waveforms, supported by experimental data. The transient volume change of the sessile droplet upon step electric pressure was modeled by a one-dimensional flow. The meniscus oscillation upon cyclic electric pressure was analyzed by a harmonic oscillator model. By combining these two models, the behavior of the sessile droplet, under a bi-directional square voltage pulse train with a different bias voltage, was analyzed. It is expected that this theoretical model can provide effective information in optimizing the voltage waveform for drop-on-demand electrohydrodynamic jetting.

Original languageEnglish
Pages (from-to)2815-2823
Number of pages9
JournalJournal of Mechanical Science and Technology
Volume28
Issue number7
DOIs
Publication statusPublished - 2014 Jan 1

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ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials

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