1133 4 点光ファイバープローブによる気泡計測の精度について : 気泡界面変形の影響 Accuracy of Measuring Dispersed Bubbles via 4-Tip Optical Fiber Probe : Influence of Deformation of Bubble Interface on Measuring Accuracy

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Probe methods are widely used for measuring void fraction and bubble characterizations in turbulent gas-liquid two-phase flows. The knowledge of interfacial motion and/or interfacial deformation of a bubble being in contact with the probe as well as its motion of the center of gravity are insufficient. In addition, relationship between the interfacial deformation and the output signal from the probe is unknown as well as influence of the interfacial deformation on the measuring accuracy. In the present paper, interfacial motion, including interfacial velocity, and magnitude of the deformation of a bubble are discussed on the basis of visualization of them using two sets of high-speed video camera and microscope. Relationship between the interfacial deformation and the output signal from the probe is quantitatively discussed on the basis of simultaneous measurement of bubble deformation and the probe signal.

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  • 年次大会講演論文集

    年次大会講演論文集 2002.3(0), 63-64, 2002

    日本機械学会

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