Growth rate and oscillation frequency of electrified jet and droplet

Effects of charge and electric field

Boo Hyoung Bang, Min Woo Kim, Yong Il Kim, Suk Goo Yoon

Research output: Contribution to journalArticle

Abstract

Electrified jets are applied industrially in agriculture, automobiles, targeted drug delivery systems, spacecraft propulsion units, liquid metal sprayers, ion sources, emulsifiers, dust scavenging systems, and ink-jet printers. Electrified columnar jets experience instability caused by electrohydrodynamic interactions of the charged liquid surfaces with electric fields. Electrostatic and surface tension forces competing along the liquid surface create surface pressure differences. The temporal rise and fall of the surface pressure induce oscillations of jets and droplet. A linear theory was derived to yield a dispersion equation determining the most dominant wavelength of oscillation for a given charge level and electric field; this enabled the estimation of the diameter of an atomized droplet. In addition, the frequency of oscillation was derived for a cylindrical jet and spherical droplet. Parametric studies were performed for various charging levels and electric field strengths.

Original languageEnglish
JournalAerosol Science and Technology
DOIs
Publication statusAccepted/In press - 2018 Jan 1

Fingerprint

droplet
electric field
oscillation
Electric fields
surface pressure
Spacecraft propulsion
Ink jet printers
liquid
Electrohydrodynamics
Scavenging
Liquids
Ion sources
Liquid metals
Agriculture
Automobiles
Metal ions
Dust
Surface tension
surface tension
Electrostatics

Keywords

  • Warren Finlay

ASJC Scopus subject areas

  • Environmental Chemistry
  • Materials Science(all)
  • Pollution

Cite this

Growth rate and oscillation frequency of electrified jet and droplet : Effects of charge and electric field. / Bang, Boo Hyoung; Kim, Min Woo; Kim, Yong Il; Yoon, Suk Goo.

In: Aerosol Science and Technology, 01.01.2018.

Research output: Contribution to journalArticle

@article{b9940c0bb0d347149c79451159c0d074,
title = "Growth rate and oscillation frequency of electrified jet and droplet: Effects of charge and electric field",
abstract = "Electrified jets are applied industrially in agriculture, automobiles, targeted drug delivery systems, spacecraft propulsion units, liquid metal sprayers, ion sources, emulsifiers, dust scavenging systems, and ink-jet printers. Electrified columnar jets experience instability caused by electrohydrodynamic interactions of the charged liquid surfaces with electric fields. Electrostatic and surface tension forces competing along the liquid surface create surface pressure differences. The temporal rise and fall of the surface pressure induce oscillations of jets and droplet. A linear theory was derived to yield a dispersion equation determining the most dominant wavelength of oscillation for a given charge level and electric field; this enabled the estimation of the diameter of an atomized droplet. In addition, the frequency of oscillation was derived for a cylindrical jet and spherical droplet. Parametric studies were performed for various charging levels and electric field strengths.",
keywords = "Warren Finlay",
author = "Bang, {Boo Hyoung} and Kim, {Min Woo} and Kim, {Yong Il} and Yoon, {Suk Goo}",
year = "2018",
month = "1",
day = "1",
doi = "10.1080/02786826.2018.1501463",
language = "English",
journal = "Aerosol Science and Technology",
issn = "0278-6826",
publisher = "Taylor and Francis Ltd.",

}

TY - JOUR

T1 - Growth rate and oscillation frequency of electrified jet and droplet

T2 - Effects of charge and electric field

AU - Bang, Boo Hyoung

AU - Kim, Min Woo

AU - Kim, Yong Il

AU - Yoon, Suk Goo

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Electrified jets are applied industrially in agriculture, automobiles, targeted drug delivery systems, spacecraft propulsion units, liquid metal sprayers, ion sources, emulsifiers, dust scavenging systems, and ink-jet printers. Electrified columnar jets experience instability caused by electrohydrodynamic interactions of the charged liquid surfaces with electric fields. Electrostatic and surface tension forces competing along the liquid surface create surface pressure differences. The temporal rise and fall of the surface pressure induce oscillations of jets and droplet. A linear theory was derived to yield a dispersion equation determining the most dominant wavelength of oscillation for a given charge level and electric field; this enabled the estimation of the diameter of an atomized droplet. In addition, the frequency of oscillation was derived for a cylindrical jet and spherical droplet. Parametric studies were performed for various charging levels and electric field strengths.

AB - Electrified jets are applied industrially in agriculture, automobiles, targeted drug delivery systems, spacecraft propulsion units, liquid metal sprayers, ion sources, emulsifiers, dust scavenging systems, and ink-jet printers. Electrified columnar jets experience instability caused by electrohydrodynamic interactions of the charged liquid surfaces with electric fields. Electrostatic and surface tension forces competing along the liquid surface create surface pressure differences. The temporal rise and fall of the surface pressure induce oscillations of jets and droplet. A linear theory was derived to yield a dispersion equation determining the most dominant wavelength of oscillation for a given charge level and electric field; this enabled the estimation of the diameter of an atomized droplet. In addition, the frequency of oscillation was derived for a cylindrical jet and spherical droplet. Parametric studies were performed for various charging levels and electric field strengths.

KW - Warren Finlay

UR - http://www.scopus.com/inward/record.url?scp=85052129532&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85052129532&partnerID=8YFLogxK

U2 - 10.1080/02786826.2018.1501463

DO - 10.1080/02786826.2018.1501463

M3 - Article

JO - Aerosol Science and Technology

JF - Aerosol Science and Technology

SN - 0278-6826

ER -