Effect of Surface Tension Relaxation on the Stability of the Charged Jet

A. I. Grigoryev; Григорьев А. И.; N. Yu. Kolbneva; Колбнева Н. Ю.; S. O. Shiryaeva; Ширяева С. О.

doi:10.31857/S003282352306005X

Effect of Surface Tension Relaxation on the Stability of the Charged Jet

Authors: Grigoryev A.I.¹, Kolbneva N.Y.², Shiryaeva S.O.²
Affiliations:
1. Ishlinky Institute for Problems in Mechanics RAS
2. Demidov Yaroslavl State University
Issue: Vol 87, No 6 (2023)
Pages: 1014-1027
Section: Articles
URL: https://journals.rcsi.science/0032-8235/article/view/232549
DOI: https://doi.org/10.31857/S003282352306005X
EDN: https://elibrary.ru/HLMDPE
ID: 232549

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Abstract

In the asymptotic calculations of the first order of smallness by the dimensionless amplitude of capillary waves on the surface of charged jets of polar liquid, the effect of the relaxation effect of surface tension on the regularities of their implementation is investigated. Calculations are carried out on the model of an ideal non-compressible electrically conductive fluid. It has been shown that taking into account the effect of dynamic surface tension leads to an increase in the order of the dispersion equation, which has another damping root, which is obliged to destroy the near-surface double electric layer (destruction of the ordering of polar molecules in the near-surface layer), which undergoes electrostatic instability at sufficiently large charges (pre-breakdown in the sense of ignition of corona discharge in air). In the ideal fluid mathematical model used, the relaxation motion of the jet surface disturbances that occurs when the surface tension relaxation effect is turned on and the attenuation decrements of capillary wave motions are purely of a relaxation nature.

Keywords

charged jet, surface tension relaxation, decrement

References

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