Author(s)

D. Sindayihebura & L. Bolle

Abstract

Atomization of thin liquid films by means of ultrasonic vibrations is related to the liquid free surface instabilities. It is most probable that surface waves are responsible for droplets formation. This work is devoted to the experimental analysis of those waves. A special emphasis is stressed on the evolution of their configurations in the steps which precede the liquid film desintegration. The generated surface wave patterns are visualized by a high-speed camera, at high magnification. Different free surface vibration modes are detected and shown. The influence of the forcing amplitude and frequency on the standing wave patterns is analysed as well as the nonlinear effects. 1 Introduction Surface waves induced on the horizo

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