진동하는 소수성표면 위에 놓인 액적의 내부유동에 관한 실험적 연구

다국어 초록 (Multilingual Abstract)

This study aims to understand the internal flow characteristics of a droplet under a periodic forced vibration. In order to predict the resonance frequency of a droplet, various approaches were made. High-speed camera and macro lens were used to capture the internal flow characteristics of a droplet on the vibrating hydrophobic surface. The result shows that the droplet under vertical periodic forced vibration has a variety of shape depending on their modes, in particular modes 2, 4, 6, and 8. In addition, the induced internal vortex flow inside the droplet was also observed in each mode. Typically, the induced flow moves upward along the symmetry axis and downward along the surface of the drop from the apex towards the contact line in modes 2 and 4 and breaks into smaller vortex. On the other hand, the large-scale vortex always remains steady in modes 6 and 8. The flow speed in mode 4 is always faster than that in 2, whereas those of modes 6 and 8 are almost similar each other.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 실험장치 및 방법
• 3. 실험결과 및 토의
• 4. 결론
• 참고문헌