G0501-4-5 微小流路分岐部振動流により生じる揚水効果に関する研究(管内流れ)

概要

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The pumping effectiveness of the micro T-junction with the oscillatory flow was examined. At one end of the top bar of T, there was a closed tank; Tank 1, that was solid with water. At another end of the top bar of T, there was a tank; Tank 2, that was open to the atmosphere. At the bottom end of the vertical branch of T, there was also a tank; Tank 3, that was open to the atmosphere. In Tank 2 and Tank 3, free surface of water was formed. The cross-sections of the flow path were 0.2 mm × 0.2 mm and 0.5 mm × 0.5 mm in the present experiments. Back-and-forth flow was created at the branch by a piezo actuator mounted at Tank 1. Water surface level in Tank 2 was higher than that in Tank 3. The water surface level height difference between Tank 2 and Tank 3 was mainly dominated by the back-and-forth velocity at the T-junction. The pumping performance from Tank 3 to Tank 2 started at the lower velocity in the smaller flow path.
2009-09-12