A308 ピエゾアクチュエーターを用いた3DスキャニングマイクロPIVシステムの開発

抄録

This paper reports a new technique of micro-resolution Particle Image Velocimetry (PIV). To investigate three-dimensional flow structure in microscopic scale, 3D scanning micro-PIV system was developed by combining a high-speed camera, an epi-fluorescent microscope, a CW (Continuous Wave) laser, and a piezo actuator. In order to validate the measurement accuracy of the system, a numerical simulation and an experiment were carried out. In numerical simulation, the optimum conditions of 3D scanning micro-PIV technique were investigated using synthetic images under epi-fluorescent microscope observation. In experiment, a micro-round tube flow was measured by utilizing the optimum conditions. Three-dimensional velocity fields of water inside the micro-round tube with 95 μm were visualized for a spatial resolution of 5.4×2.7×0.27 μm.