1973•The Physics of FluidsRequires access

Stability of a curved gas-liquid interface

Jan Berghmans

Abstract

A localized perturbation technique is used to study the stability of a paraboloidal interface. Surface tension effects are considered but viscosity is neglected in the analysis. It is found that instability can occur for certain displacements of the interface. The results of this theoretical analysis are applied to the stability of the interface of a gas jet impinging on a liquid. A linear relationship between the critical jet strength and surface tension is obtained. This agrees with the experimental observations.

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Key concepts: Physics, Surface tension, Instability, Perturbation (astronomy), Mechanics, Jet (fluid), Viscosity, Stability (learning theory)