1711 水平管内気液二相流のUVP計測(2)(OS17-3 超音波を利用した流動場の計測,OS17 超音波を利用した流動場の計測,オーガナイズドセッション)

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  • 1711 UVP measurement of gas-liquid two phase flow in a horizontal tube(2)

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As a basic study for developing a two-phase flowmeter by means of ultrasonic velocity profiler(UVP), theoretical and numerical estimations of the phase distribution measurement are performed. The measurement accuracy depends on the number of ultrasonic measurement lines. When the azimuthal resolution is lacked, the error grows up for low void fraction conditions. Considering the relative resolution to radial direction, the sufficient number of the lines is concluded as 8. A practical measurement for a slug flow is also carried out to understand the internal secondary flow that affects on the flow rate measured by UVP.

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