竖直矩形窄缝通道内静水条件下气泡运动特性实验研究

Experimental Investigation of Air Bubble in Water through a Vertical Narrow Rectangular Channel

基于图像自动识别方法对矩形窄缝通道(2 mm×60 mm×790 mm)内常温常压静态流体中的气泡运动特性进行可视化实验研究,获得不同气泡当量直径对应的气泡形态和运动速度;定量分析气泡运动速度与气泡当量直径间的关系,并基于本研究获得的实验数据对现有关于气泡运动速度的预测关系式进行定量评价。

This paper presents the visualized investigation of air bubble motion in stagnant water through a vertical narrow rectangular channel with a cross section in 2mmx60mm, The path and shape of different area equivalent diameter was observed through the experiment. The relationship between the rising velocity and area equivalent diameter was analyzed quantitatively, and finally the cap and slug bubble rising terminal velocities based on this ext^eriment result were enmnared with the correlations in literature quantitatively.