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A measurement system is developed for the parameter detection and flow characterization of gas-liquid two-phase flow in micro-channel. Electrical capacitance measurement system and optical measurement system are designed for the micro-channels with different inner diameters of 4.0 mm, 3.1 mm and 1.8 mm respectively. In experiment, bubble flow, stratified flow, slug flow and annular flow are observed...
A new threshold probability statistical technique based on energy evaluation was proposed to explore the relationship of the flow pattern of oil-gas two-phase flow with the differential pressure signal that was a representative non-stationary signal. The differential pressure signal was firstly decomposed into a series of IMFs (intrinsic mode functions) by EMD (empirical mode decomposition) according...
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