Dynamics of a vertically vibrating mercury drop

Tanu Singla,M Rivera,Josué Flores Tovar,A Figueroa,Federico Vázquez,Farook Bashir Yousif,Dinesh Kumar Verma

doi:10.1063/1.5088043

Abstract

The dynamics of vertically vibrating liquid drops has been studied by several researchers and different phenomena have been reported. In the present work, we report experimental results for some interesting phenomena that can be observed in a liquid drop subjected to vertical vibrations. For this purpose, a drop of Mercury was kept on a spherical watch glass and it was perturbed with different amplitudes and frequencies. The oscillations of the drop were recorded using a video camera and image analysis was used to further understand its behavior. The method of correlation was then employed to analyze the videos recorded with different perturbations. We report phenomena like subharmonic oscillations and rotation of the drop; and also the resonance and superpropulsion in the droplet ejection.

Highlights

Behavior of liquid drops subjected to external perturbations has been studied for over six decades
The method of image processing was used to investigate the dynamical behavior of liquid drops subjected to vertical perturbations
The time series of cross correlation coefficients were generated from the videos of vertically vibrating Mercury drop

Summary

Introduction

Behavior of liquid drops subjected to external perturbations has been studied for over six decades. These perturbations excite several oscillation modes in the drop by inducing radial variations in different directions. Depending on the characteristics of the perturbation, different modes can be observed in the drop. The oscillations in the liquid drops, water drops to be specific, were first observed in 1952 when N. Similar work using boiling liquid Nitrogen and Oxygen at room temperature has been reported by different groups.. Oscillations in the liquid drops due to temperature is known as self induced oscillations as no oscillating perturbation is needed to induce them. Self induced oscillations has been reported in a column of Mercury in the presence of an electrolytic solution..

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Conclusion