Asymptotic decay of radius of a weakly conductive viscous jet in an external electric field

A. F. Spivak, Y. A. Dzenis

Research output: Contribution to journalArticle

107 Citations (Scopus)

Abstract

Motion of a weakly conductive viscous jet accelerated by an external electric field is considered. Nonlinear rheological constitutive equation applicable for polymer fluids (Oswald-deWaele law) is applied. A differential equation for the variation of jet radius with axial coordinate is derived. Asymptotic variation of the jet radius at large distances from the jet origin is analyzed. It is found that the well-known power-law asymptote for Newtonian fluids with the exponent 1/4 holds for more general class of fluids, i.e., pseudoplastic (shear thinning) and dilatant (shear thickening) fluids with the flow index between 0 and 2. Dilatant fluids with the flow index greater than 2 exhibit power-law asymptotes with the exponents depending on the flow index. Results can be applied for the analysis of viscous polymer jets in the electrospinning process.

Original languageEnglish (US)
Pages (from-to)3067-3069
Number of pages3
JournalApplied Physics Letters
Volume73
Issue number21
DOIs
StatePublished - Dec 1 1998

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radii
electric fields
decay
asymptotes
fluids
exponents
shear thinning
Newtonian fluids
polymers
constitutive equations
differential equations
shear

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Asymptotic decay of radius of a weakly conductive viscous jet in an external electric field. / Spivak, A. F.; Dzenis, Y. A.

In: Applied Physics Letters, Vol. 73, No. 21, 01.12.1998, p. 3067-3069.

Research output: Contribution to journalArticle

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