日本機械学会論文集B編
Online ISSN : 1884-8346
ISSN-L : 1884-8346
一般論文
電気伝導を利用した狭隘流路内気液界面構造の可視化
伊藤 大介Horst-Michael Prasser有冨 正憲
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ジャーナル フリー

2011 年 77 巻 784 号 p. 2354-2363

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Three-dimensional reconstruction of two-phase interfacial structure in a narrow channel was conducted by using the liquid film thickness and void fraction distributions measured by liquid film sensors. This sensor based on the electrical conductance measurement between the electrodes. A pair of liquid film sensors is installed on the opposing walls of the rectangular flow channel, and the electrical conductance between the electrodes on a sensor and between the sensors was measured. Then, the liquid film thickness on the walls and the void fraction in the narrow gap are obtained in two-dimensional area. The liquid film sensor with a spatial resolution of 2×2 mm2 was applied to measure the air-water two-phase flow in the narrow rectangular channel with a gap of 1.5mm and a width of 32mm. The measured distributions of the liquid film thickness and the void fraction were used to estimate the thickness of the gaseous phase, and the gas-liquid interfacial structure was visualized in bubbly, slug and churn flows.

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© 2011 一般社団法人 日本機械学会
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