A Study on the Flow Measurement of Gas-Liquid Two-Phase Flow by a New Hydraulic Oscillator-Type Flowmeter. Bubble Flow in a Vertical Pipe.

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  • 新・流体振動流量計による気液二相流の流量計測　（垂直管内気泡流）
  • シン リュウタイ シンドウ リュウリョウケイ ニ ヨル キエキ 2ソウリュウ

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The author has shown a new phenomenon. A three-dimensional, rectangular or round shaped jet oscillates periodically when it is issued into a suddenly enlarged flow passage. A suitable configuration of the rectangular or round nozzle features a smaller height than the one of the flow passage. Using this phenomenon, a new hydraulic oscillator-type flowmeter without control port and feedback loop can be constructed. This paper presents an entirely new method to measure the flow rate of a gas-liquid bubble flow in a vertical pipe using the above-mentioned new hydraulic oscillator-type flowmeter. The gas and liquid flow rates can be obtained by measuring the oscillatory frequency of a gas-liquid jet flow and the pressure loss of the flowmeter.

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