矩形窄缝通道内滑移汽泡生长及界面形态可视化研究

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基金项目:

国家自然科学基金资助项目(51106142)

Visualized Study on Interface Shape and Growth of Sliding Bubble in Narrow Rectangular Channel

1. CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu, 610041, China;
2. National Energy Pressurized Water Reactor Technology Research Center, Nuclear Power Institute of China, Chengdu, 610041, China

摘要: 采用高速摄像仪从宽面和窄面观察窄缝通道中孤立汽泡区域内滑移汽泡生长以及滑移过程中汽泡界面形态的变化规律。研究结果表明,在拍摄窗口内滑移汽泡生长速率较小,小汽泡的生长速率略高于大汽泡的生长速率。从宽面观察,滑移汽泡呈近似球状;从窄面观察,平行于加热面方向的轴长略小于垂直于加热面方向上的轴长。总体来说,在本实验工况下,汽泡在滑动的过程中其前后接触角变化不大。
- 滑移汽泡 /
- 界面形状 /
- 窄缝
Abstract: Sliding bubble interface shape and bubble growth for the isolated bubble region in a narrow rectangular channel were observed from the wide side and narrow side of the narrow rectangular channel using a high speed digital camera.The results show that the growth rate of sliding bubble is small,and the growth rate of a small bubble is slightly larger than that of a large bubble.The sliding bubble appears to be spherical in shape according to the observation from the wide side of the narrow rectangular channel,but the sliding bubble is elongated in the direction normal to the heating surface from the side view.During the process of sliding bubble along the heating surface,the upstream and downstream contact angles are almost equal in this experimental condition.
- Sliding bubble /
- Interface shape /
- Narrow channel