抄録
The dynamic behavior of water droplets on a vibrating solid surface was investigated experimentally. The liquid drop responses were examined by two vibrating methods. At first, the dynamic behavior of a water droplet on the solid plate subject to vertical vibration was investigated. In this experiment, an electrodynamic shaker was operated to generate the vertical vibration. Secondarily, the dynamic behavior of the magnet-magnetic fluid element on the plate subject to the vertical vibration was investigated because of the comparison with the behavior of water droplet. Thirdly, liquid atomization by ultrasonic vibration was investigated with a surface acoustic wave device. The dynamic behavior of water droplets on the vibrating plate was analyzed by a high speed video camera system. It was found that the water droplet responds to the excitation in elongation and contraction (axisymmetric modes) at lower excitation accelerations. With increase of excitation acceleration, the water droplet showed the polygonal oscillations (polygonal modes). The water droplet was completely atomized by the ultrasonic vibration using the surface acoustic wave device.
