Test study on dynamic behavior of droplet impact vibration

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Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (21) : 277-283.

FENG Chen1,2, ZHOU Hang2, ZHANG Meng2, CHEN Xinwen2, HUANG Jinzuo2, LI Zhaohua2

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Abstract

The droplet impact phenomenon widely exists in nature and engineering applications. However, the combined effects of Weber number（）and vibration force on droplet dynamics have not been fully explored. In order to fully explore the combined effects of and vibration force on droplet dynamics, This paper uses a high-speed camera to study the dynamics of a single droplet impacting a solid surface under different vibration conditions, and explores the dynamic behavior of a single droplet impact under the influence of and vibration force. The research results show that under the condition of large excitation force, the droplets obtain additional inertial force to overcome the adhesion force, and the droplet diffusion is enhanced. However, as the excitation force decreases, the enhancement effect also decreases. The droplet spreading is enhanced by 0.07 at of 33.25 and a vibrational force of 62N than at a vibrational force of 0.23N. can increase the relative velocity of droplet impact and enhance the relative impact momentum of droplets, thus promoting droplet spreading. The vibration enhancement factor of the droplets at of 33.25 increased on average by 0.95 compared to that at 13.87.

Key words

droplet impact / vibratory force / spreading diameter / spreading velocity: weber number

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FENG Chen1, 2, ZHOU Hang2, ZHANG Meng2, CHEN Xinwen2, HUANG Jinzuo2, LI Zhaohua2. Test study on dynamic behavior of droplet impact vibration[J]. Journal of Vibration and Shock, 2024, 43(21): 277-283

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