图1 微通道结构示意图

Fig.1 Schematic diagram of the microchannel structure

图2 改性原理示意图

Fig.2 Schematic diagram of modification principle

图3 实验装置示意图1—计算机;2—高速摄像机;3—液体注射泵;4—气体注射泵;5—压力传感器;6—光源;7—微反应器;8—接料容器

Fig.3 Schematic diagram of the experimental setup

图4 不同功率等离子体处理并在空气中放置一定时间后的水接触角

Fig.4 Water contact angle after plasma treatment with different power and placed in air for a certain time

图5 不同条件下紫外线处理后的水接触角

Fig.5 Water contact angle under different conditions of UV treatment

图6 四种不同水接触角的微通道

Fig.6 Four microchannels with different water contact angles

图7 jG= jL =0.116 m/s条件下的气-液弹状流形成过程特性（流动方向为自右向左；以微通道宽度0.6 mm为标尺）

Fig.7 Formation process characteristics of gas-liquid slug flow at jG= jL =0.116 m/s(The flow direction is from right to left. The microchannel width was 0.6 mm as a scale bar)

图8 jG=0.162 m/s、jL=0.023 m/s条件下的气-液弹状-环形流特性（流动方向为自右向左；以微通道宽度0.6 mm为标尺）(The flow direction is from right to left. The microchannel width was 0.6 mm as a scale bar)

Fig.8 Characteristics of gas-liquid slug-annular flow at jG=0.162 m/s, jL=0.023 m/s

图9 jG=1.389 m/s、jL=0.463 m/s条件下的环状流特性（流动方向为自右向左；以微通道宽度0.6 mm为标尺）

Fig.9 Annular flow characteristics at jG=1.389 m/s, jL=0.463 m/s(The flow direction is from right to left. The microchannel width was 0.6 mm as a scale bar)

图10 jG=3.704 m/s、jL=0.023 m/s条件下的并行流特性（流动方向为自右向左；以微通道宽度0.6 mm为标尺）

Fig.10 Parallel flow characteristics at jG=3.704 m/s, jL=0.023 m/s(The flow direction is from right to left. The microchannel width was 0.6 mm as a scale bar)

图11 jG=2.315 m/s、jL=1.389 m/s条件下的搅拌流特性（流动方向为自右向左；以微通道宽度0.6 mm为标尺）

Fig.11 Churning flow characteristics at jG=2.315 m/s, jL=1.389 m/s(The flow direction is from right to left. The microchannel width was 0.6 mm as a scale bar)

图12 jG=0.231 m/s、jL=0.926 m/s条件下的泡状流特性（流动方向为自右向左；以微通道宽度0.6 mm为标尺）

Fig.12 Bubbly flow characteristics at jG=0.231 m/s, jL=0.926 m/s(The flow direction is from right to left. The microchannel width was 0.6 mm as a scale bar)

图13 四种微通道内的气-液两相流型图及流型转换线

Fig.13 Gas-liquid flow patterns and conversion lines in the four microchannels

图14 QG=3.5 ml/min、QL= 2.0 ml/min条件下的气泡生成过程

Fig.14 Bubble formation process at QG=3.5 ml/min, QL= 2.0 ml/min

图15 气-液相流速及接触角对气泡生成各阶段时间的影响规律

Fig.15 The influence of gas-liquid velocity and contact angle on the time of each stage of bubble formation

图16 气泡长度随通道壁面水接触角的变化规律

Fig.16 The variation of bubble length with water contact angle of channel wall

图17 气泡长度随通道壁面水接触角的变化规律

Fig.17 The variation of bubble length with water contact angle of channel wall

图18 模型预测值与实验值的对比

Fig.18 The comparison of model predicted value and experimental value

图19 微通道内各部分压力降分布示意图

Fig.19 Schematic diagram of pressure drop distribution in microchannel

图20 气-液-固三相接触线示意图

Fig.20 Schematic diagram of gas-liquid-solid three phase moving contact line

图21 四种微通道内的压力降变化规律

Fig.21 The variation of pressure drop in four microchannels