Gas-liquid two-phase flow exhibits complex flow patterns,making it challenging to achieve precise control.This study focuses on the pressure-flow control of a gas-liquid two-phase flow system and investigates the joint control of both phases through experimental research.The results reveal that pressure has a significant impact,necessitating the maintenance of constant pressure during the control process.Moreover,the joint control of gas-liquid two-phase flow demonstrates variable consistency,enabling accurate control by studying this consistency.Additionally,uncertainty evaluations were conducted separately for the gas and liquid flow rates in the system.The uncertainty of gas flow rate Ur(Qv,air)was determined as 3.8％(k=2),while the extended uncertainty of liquid flow Ur(Qv,liq)was found to be 3.2％(k=2).These findings ensure precise display of gas-liquid two-phase flow rates.
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