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
AN - SCOPUS:85052129532
JO - Aerosol Science and Technology
JF - Aerosol Science and Technology
SN - 0278-6826
ER -