Electrohydrodynamic deformation and interaction of drop pairs

James C Baygents, N. J. Rivette, H. A. Stone

Research output: Contribution to journalArticle

130 Citations (Scopus)

Abstract

The motion of two drops in a uniform electric field is considered using the leaky dielectric model. The drops are assumed to have no native charge and a dielectrophoretic effect favours translation of the drops toward one another. However circulatory flows that stem from electrohydrodynamic stresses may either act with or against this dielectrophoretic effect. Consequently, both prolate and oblate drop deformations may be generated and significant deformation occurs near drop contact owing to enhancement of the local electric field. For sufficiently widely spaced drops, electrohydrodynamic flows dominate direct electrical interactions so drops may be pushed apart, though closely spaced drops almost always move together as a result of the electrical interaction or deformation.

Original languageEnglish (US)
Pages (from-to)359-375
Number of pages17
JournalJournal of Fluid Mechanics
Volume368
StatePublished - Aug 10 1998

Fingerprint

Electrohydrodynamics
electrohydrodynamics
interactions
Electric fields
electric fields
stems
Contacts (fluid mechanics)
augmentation

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Condensed Matter Physics

Cite this

Electrohydrodynamic deformation and interaction of drop pairs. / Baygents, James C; Rivette, N. J.; Stone, H. A.

In: Journal of Fluid Mechanics, Vol. 368, 10.08.1998, p. 359-375.

Research output: Contribution to journalArticle

Baygents, James C ; Rivette, N. J. ; Stone, H. A. / Electrohydrodynamic deformation and interaction of drop pairs. In: Journal of Fluid Mechanics. 1998 ; Vol. 368. pp. 359-375.
@article{1905bce7ca5b43aca2873cef0a6c1450,
title = "Electrohydrodynamic deformation and interaction of drop pairs",
abstract = "The motion of two drops in a uniform electric field is considered using the leaky dielectric model. The drops are assumed to have no native charge and a dielectrophoretic effect favours translation of the drops toward one another. However circulatory flows that stem from electrohydrodynamic stresses may either act with or against this dielectrophoretic effect. Consequently, both prolate and oblate drop deformations may be generated and significant deformation occurs near drop contact owing to enhancement of the local electric field. For sufficiently widely spaced drops, electrohydrodynamic flows dominate direct electrical interactions so drops may be pushed apart, though closely spaced drops almost always move together as a result of the electrical interaction or deformation.",
author = "Baygents, {James C} and Rivette, {N. J.} and Stone, {H. A.}",
year = "1998",
month = "8",
day = "10",
language = "English (US)",
volume = "368",
pages = "359--375",
journal = "Journal of Fluid Mechanics",
issn = "0022-1120",
publisher = "Cambridge University Press",

}

TY - JOUR

T1 - Electrohydrodynamic deformation and interaction of drop pairs

AU - Baygents, James C

AU - Rivette, N. J.

AU - Stone, H. A.

PY - 1998/8/10

Y1 - 1998/8/10

N2 - The motion of two drops in a uniform electric field is considered using the leaky dielectric model. The drops are assumed to have no native charge and a dielectrophoretic effect favours translation of the drops toward one another. However circulatory flows that stem from electrohydrodynamic stresses may either act with or against this dielectrophoretic effect. Consequently, both prolate and oblate drop deformations may be generated and significant deformation occurs near drop contact owing to enhancement of the local electric field. For sufficiently widely spaced drops, electrohydrodynamic flows dominate direct electrical interactions so drops may be pushed apart, though closely spaced drops almost always move together as a result of the electrical interaction or deformation.

AB - The motion of two drops in a uniform electric field is considered using the leaky dielectric model. The drops are assumed to have no native charge and a dielectrophoretic effect favours translation of the drops toward one another. However circulatory flows that stem from electrohydrodynamic stresses may either act with or against this dielectrophoretic effect. Consequently, both prolate and oblate drop deformations may be generated and significant deformation occurs near drop contact owing to enhancement of the local electric field. For sufficiently widely spaced drops, electrohydrodynamic flows dominate direct electrical interactions so drops may be pushed apart, though closely spaced drops almost always move together as a result of the electrical interaction or deformation.

UR - http://www.scopus.com/inward/record.url?scp=0032140470&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032140470&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0032140470

VL - 368

SP - 359

EP - 375

JO - Journal of Fluid Mechanics

JF - Journal of Fluid Mechanics

SN - 0022-1120

ER -