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The stability of a meniscus joining a vertical rod to a bath of liquid

Published online by Cambridge University Press:  11 April 2006

E. Pitts
Affiliation:
Research Division, Kodak Limited, Headstone Drive, Harrow, Middlesex HA1 4TY, England

Abstract

A circular cylinder is held vertically and withdrawn from a large bath of liquid. When the horizontal end face of the cylinder rises above the mean undisturbed liquid level, an axially symmetrical meniscus is formed, which joins the cylinder at the circumference of the end. If the cylinder is further withdrawn, at a certain height the meniscus breaks. By means of the calculus of variations the condition for stability is derived in terms of the increase in height and the increase in the angle between the tangent to the meniscus and the face of the cylinder at the point where the meniscus joins it. The meniscus is unstable as long as these changes are of the same sign.

Type
Research Article
Copyright
© 1976 Cambridge University Press

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References

Bolza, O. 1961 Lectures on the Calculus of Variations. Dover.
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Princen, H. M. 1969 In Surface and Colloid Science (ed. E. Matijevic), vol. 2, p. 1. Interscience.