| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Outline of Final Research Achievements |
As the halation at the gas-liquid interface brings about technical difficulties for the visualization of two phase flow using laser light sheet, only few attempts have ever been made at the experimental examination of the spatial structure of the bubble. In this study, we propose an optical observation method using differences of wavelength between the gas phase and the Rhodamine B dye in the liquid phase which produces fluorescence upon exposure to the green laser sheet. The camera equipped with a sharp cut-off filter is used for fluorescence detection, so that only the fluorescent light is recorded. In other words, the image which corresponds to the bubble is omitted. Furthermore, we examine the Reynolds transport theorem in the microscopic and macroscopic fields, and modify the conventional theorem for the local volume average of a gradient which modelling of the flow through porous media and the two phase flow is based on.
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