Preliminary study on application of X-ray CT scanner to measurement of void fractions in steady state two-phase flows.
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概要
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Preliminary studies are made in order to apply an X-ray CT scanner to the measurement of cross-sectional distributions of void fractions in steady state two-phase flows. Using air-water flows in a horizontal U-shaped tube, results of CT scanner measurements are compared with those of the volumetric measurements with quick-closing valves and of hotfilm anemometer measurements. Studied are cross-sectionally averaged void fractions and void fraction profiles. The comparisons give good agreements. The effect of density fluctuations on the reconstruction of void fraction distributions in two-phase flows is also discussed. Consideration of the statistical fluctuation in the projection data for a stationary object gives the sufficient conditions required for the evaluation of the cross-sectional distribution of the scanning time-averaged void fraction in steady state two-phase flows.
- 一般社団法人 日本原子力学会の論文
著者
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Kohno Hideki
Central Research Laboratory Hitachi Ltd.
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IKEDA Takashi
Energy Research Laboratory, Hitachi Ltd.
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KOTANI Koichi
Energy Research Lab., Hitachi Ltd.
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KOHNO Hideki
Central Research Laboratory, Hitachi, Ltd.
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MAEDA Yuichiro
Energy Research Laboratory, Hitachi, Ltd.
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KOTANI Koichi
Energy Research Laboratory, Hitachi, Ltd.
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