光ファイバープローブによる気泡計測に関する研究 : 第1報,プローブが気泡界面運動に与える影響
光ファイバープローブによる気泡計測に関する研究 : 第1報,プローブが気泡界面運動に与える影響
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使用光纤探头进行气泡测量的研究：第 1 份报告，探头对气泡界面运动的影响
DOI：
10.1299/kikaib.65.2619
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
博之 幡野
中科院分区：
文献类型：
--
作者：
隆之 齋藤;正人 北村;岳夫 梶島;博之 幡野
为了提高光纤检测方法的质量，本文定量地讨论了探头对气泡动力学的影响。实验研究了当量直径为3.59mm的纯空气气泡界面的变形过程、变形率、界面速度以及气泡与探针（直径为250μm）接触时气泡取向的变化。结果，获得以下结果。当气泡与垂直于气泡运动方向的探针接触时，气泡界面的变形和振荡伴随着气泡取向的改变。气泡界面的振荡比自由气泡放大35%，其频率与自由气泡相同。当气泡与平行于气泡运动方向的探针接触时，气泡取向的改变伴随着气泡界面的振荡。与自由气泡相比，气泡界面的振荡被抑制了15%。
In order to improve the qualty of an optical fiber prove method, the influences of the probe on bubble dynamics are quantitatively discussed in the present paper. Distortion process of pure-air bubble interface (equivalent diameter is 3.59mm), the distortion rate, the interfacial velocity and change of bubble orientation caused by contacting a probe (the diameter is 250μm) are experimentally investigated. As a result, the following was obtained. When the bubble contacts the probe that is perpendicular to direction of the bubble motion, distortion and oscillation of the bubble interface are followed by change of the bubble orientation. The oscillation of the bubble interface is amplified by 35% comparing with a free bubble and its frequency is the same as that of a free bubble. When the bubble contacts the probe that is parallel to direction of the bubble motion, change of bubble orientation is followed by oscillation of the bubble interface. The oscillation of the bubble interface is suppressed by 15% comparing with a free bubble.