# Accession Number:

## AD0604431

# Title:

## THE STABILITY OF ELECTRIFIED LIQUID SURFACES,

# Descriptive Note:

# Corporate Author:

## ILLINOIS UNIV URBANA CHARGED PARTICLE RESEARCH LAB

# Personal Author(s):

# Report Date:

## 1964-03-05

# Pagination or Media Count:

## 121.0

# Abstract:

The study pertains to the stability of electrified liquid surfaces. The emphasis is placed upon the stability conditions which apply to liquids sprayed from a small cylindrical capillary tube. For the case of low flow rates a particular value of applied electric potential exists, above which, the liquid surface is unstable due to electrostatic forces. Calculations of the value of the minimum spraying potential are made using a modification of a theory originated by Rayleigh. The values of the minimum spraying potential thus obtained are compared to values determined from calculations made by Zeleny. For the case of high flow rates the jet is unstable under the action of surface tension provided that the wavelength of any disturbance on the jet is greater than the circumference of the jet. If charge is present on the jet, the forces due to the charge promote stability if the wavelength of the disturbance is greater than 0.6 times the circumference of the jet. If the wavelength of the disturbance is less than 0.6 times the circumference of the jet, the effect of charge on the jet promotes instability. Author