毛细微槽中汽泡动力学行为可视化研究

工程热物理学报 , 2009, 30(7): 1175-1177.

1.中国科学院工程热物理研究所,北京,100190

2.中国科学院工程热物理研究所,北京,100190

3.中国科学院工程热物理研究所,北京,100190

基金项目: 国家自然科学基金(50776088)

THE VISUALIZATION OF MICRO-BUBBLE DYNAMIC BEHAVIOR IN CAPILLARY MICROGROOVES

本文在透明的硼硅玻璃表面加工矩形毛细微槽,利用高速摄影仪对竖直开放式毛细微槽中的汽泡动力学行为进行了可视化研究.研究结果证实了在竖直微槽中不存在汽泡脱离壁面的现象.同时实验结果表明:汽泡生长可分为三个不同的阶段,且生命周期大为缩短;常规尺寸的池沸腾理论预测模型已不能很好地预测其生长规律.

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