J0502-1-5 マイクロチャンネル内気液二相流のボイド率と流動様式に対する管路長さの影響([J0502-1]混相流の多次元ビジュアリゼーション〜流動場の光・電磁場・超音波センシング〜(1))

概要

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An optical measurement system was used to investigate the effect of microchannel length on adiabatic gas-liquid two-phase flow characteristics. Experiments were conducted with 1,676 mm long, circular microchannel with the diameter of 100 μm. Two-phase flow patterns, void fraction, gas and liquid slug lengths and their velocities were measured at the location of any distance from gas-liquid mixer to channel exit. The mean void fraction and the mean velocity of liquid slug showed the values by the homogeneous model up to about channel exit when the mass flow rate of the liquid was constant and that of the gas was lower. In case of higher mass velocity of the gas the transition of the flow patterns from slug flow to ring film flow occurred at a location of downward section of the channel.
一般社団法人日本機械学会の論文
2010-09-04