3601 微小流体回路内における循環流形成に関する研究(S56-1 マイクロ・モバイルエネルギー利用技術(1),S56 マイクロ・モバイルエネルギー利用技術)

概要

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A 10×10mm micro flow circuit of 1×1mm cross-sectional flow area was manufactured. The circuit filled with water had two tanks with free surface and one dead-end branch with a closed tank. A single bubble was cyclically generated and condensed in the dead-end branch tank so as to create forth and back oscillatory flow in the branch pass. A flow state in the flow circuit was visualized by dissolving dye in fluid. The flow state was also recorded with a high speed video camera to derive a flow velocity by utilizing the PTV method. It was confirmed that uni-directional circulation flow was created in the flow circuit without any pumps and valves. Although the created flow was oscillatory, back ward flow was never observed. The time averaged velocity in the flow circuit was 2.71×10^<-3>m/s. Numerical simulations of the flow in the micro flow circuit were also performed by using STAR-CD code.
2005-09-18