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Characterizing vibration induced by gas–liquid two-phase flows in a U-tube

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Observational analysis clarified vibration responses in U-tubes during gas-liquid two-phase flow, indicating pipeline stability implications.

Vibration responses correlate strongly with flow pattern transitions, indicating critical stability insights.
Inlet and outlet pressure fluctuations exhibit notable variations across different gas-liquid flow patterns.
Analysis of acceleration signals reveals predominant first-order and second-order vibration modes in U-tubes.
Multifractal structures in flow-induced vibrations provide feature parameters for flow pattern identification.

Zhao et al. (2025) studied this question.

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Observational analysis clarified vibration responses in U-tubes during gas-liquid two-phase flow, indicating pipeline stability implications.