Abstract
A prototypic circulation type micro-scale pump was fabricated; flow state in mini-channel in it was investigated experimentally, focusing on visualization and Particle-Tracking Velocimetry (PTV). Circulative flow was confirmed in the mini-channel, quantitatively. It is inquiring about the pumping action in the circulation type microchannel by generation/condensation action of bubbles which are assumed by microscopic flaw in structure material like a pressure vessel wall. In this report, the situation of the flow generated within such a microchannel was visualized, and the flow velocity was measured.
