345 微小液滴・気泡計測用フェムト秒レーザー加工光ファイバープローブの開発(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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An optical fiber probe method is one of the efficient and reliable measurement methods for gas-liquid two-phase flows. For measurement of small and medium size bubbles/droplets, we developed a Four-Tip Optical fiber Probe (F-TOP) and a Single-Tip Optical fiber Probe (S-TOP). In this study, we newly developed an optical fiber probe (OFP) processed by femtosecond pulse laser in order to measure tens micrometer bubbles/droplets. We demonstrated a measurement of millimeters size droplets and discussed its capability for measurement of velocities and diameters of droplets. As a result, the difference of measurement results of droplets diameter and velocity between the new OFP and visualization is within 5%.
2008-08-02