346 マイクロ気液二相流における壁面に付着した液滴の三次元形状計測(T06-4 マイクロ・ナノ熱流体システム(4) 計測,大会テーマセッション,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

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In order to develop an efficient micro heat exchanger and micro fuel cell, a number of studies of two phase flow such as liquid-gas in micro scale have been reported. In the micro scale, since surface tension became dominant, micro droplet or liquid film on a wall affects the dynamics of fluid. In the paper, in order to improve measurement accuracy of the three-dimensional shape measurement method for droplet based on a micro laser induced fluorescence technique, experimental conditions such as micro fabrication method, concentration of fluorescence dye, and intensity of excitation light were optimized. The technique was applied to a micro droplet on a wall resulting in achievement of high spatial and temporal resolution. The measurement accuracy of the present method was 0.57μm in comparison to a laser microscope. The result indicated that the present method is suitable for investigation of two phase flow in micro scale.
2008-08-02