微通道气液同向流动中气泡射流特性

工程热物理学报 , 2008, 29(2): 309-312.

1.上海交通大学机械与动力工程学院,上海,200240

2.上海交通大学机械与动力工程学院,上海,200240

3.上海交通大学机械与动力工程学院,上海,200240

基金项目: 上海市科技委员会资助项目(05JC14025) 国家自然科学基金(50536010)

BUBBLE INJECTION DURING COFLOWING AIR-WATER STREAM IN MICROCHANNELS

利用高速CCD成像技术,本文研究了梯形横截面微通道内的气泡喷射流动.通过调节同向流动时空气和水流量,研究了气泡形成的大小和频率等变化特性;以及微通道内的流型变化.实验结果表明,气泡喷射频率随空气流量的增加而增大,同时随水流量的增加而上升,且上升幅度渐趋平缓.

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