7th ISF
PHYS022 - Development of Viscosity Measurement Technique with Bouncing Droplet Phenomenon
This research project aims to advance the field of viscosity measurement by exploiting the natural phenomenon of the bouncing droplet, which serves as a robust demonstration of fluid dynamics principles and garners significant attention from the global scientific community. The experimental procedure involves inducing controlled vibrations in the target liquid on a speaker and adjusting the voltage until the occurrence of Faraday waves is observed. Subsequently, voltage differentials are analyzed with a comprehensive database to ascertain viscosity values. Furthermore, the research team has developed a mathematical equation system capable of elucidating the sequential stages of droplet formation. This system comprises four key steps, including the absence of a liquid column, analysis of fluid column characteristics, interaction between the liquid droplet and the vibrating liquid's surface, and detachment of the second-order droplet impact. Experimental findings demonstrate the precision and versatility of the developed viscosity measurement technique, with the discovery that liquids of lower viscosity exhibit diminished exponential growth rates in the relationship between maximum vertical acceleration and vibration frequency. In essence, this novel approach offers a promising avenue for liquid viscosity measurement, presenting notable advantages over conventional methods by necessitating smaller sample volumes, reducing measurement duration, and employing cost-effective and readily available equipment.
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