Two AC signals generated by two sensors mounted in two elbows at the ends of vertical and horizontal branches of a metering pipe are simultaneously recorded and analyzed. The AC signals are mainly due to fluctuations in stagnation-pressure caused by the local oscillations of local void fraction and to transport velocity of the gas-liquid flow. Features extracted from stochastic interpretation of the two signals are strongly related to gas and liquid flowrates. Laboratory and field testing of the new meter demonstrated that, for the same gas and liquid flowrates, probability distribution functions (PDF) determined from statistical analysis of “vertical” and “horizontal” AC signals are unique. For broad ranges of gas-liquid ratios, features extracted from the PDF are linearly related to gas and liquid flowrates.
A Gas-Liquid Flowmeter Combining Vertical and Horizontal Pressure Fluctuations Induced by Local Void Fraction Variations
Contributed by the Petroleum Division and presented at the ETCE2001, Houston, Texas, Feb. 5–7, 2001 of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS. Manuscript received by the Petroleum Division; Aug. 2001; revised manuscript received May 2002. Associate Editor: S. A. Shirazi.
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Toma , P., Ridley, R., and Chen, M. (March 14, 2003). "A Gas-Liquid Flowmeter Combining Vertical and Horizontal Pressure Fluctuations Induced by Local Void Fraction Variations ." ASME. J. Energy Resour. Technol. March 2003; 125(1): 35–42. https://doi.org/10.1115/1.1514214
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